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rpm  4.15.0
Files | Data Structures | Typedefs | Enumerations | Functions
OpenPGP API.

OpenPGP constants and structures from RFC-2440. More...

Files

file  rpmpgp.h
 OpenPGP constants and structures from RFC-2440.
 

Data Structures

struct  pgpPktPubkey_s
 5.1. More...
 
struct  pgpPktSigV3_s
 5.2.2. More...
 
struct  pgpPktSigV4_s
 5.2.3. More...
 
union  pgpPktSig_u
 5.2. More...
 
struct  pgpPktOnepass_s
 5.4. More...
 
struct  pgpPktKeyV3_s
 5.5.1. More...
 
struct  pgpPktKeyV4_s
 The version 4 format is similar to the version 3 format except for the absence of a validity period. More...
 
union  pgpPktKey_u
 5.5.3. More...
 
union  pgpPktPre_u
 

Typedefs

typedef struct DIGEST_CTX_s * DIGEST_CTX
 
typedef struct pgpDig_s * pgpDig
 
typedef struct pgpDigParams_s * pgpDigParams
 
typedef enum pgpTag_e pgpTag
 4.3. More...
 
typedef struct pgpPktPubkey_s pgpPktPubkey
 5.1. More...
 
typedef enum pgpSigType_e pgpSigType
 5.2.1. More...
 
typedef enum pgpPubkeyAlgo_e pgpPubkeyAlgo
 9.1. More...
 
typedef enum pgpSymkeyAlgo_e pgpSymkeyAlgo
 9.2. More...
 
typedef enum pgpCompressAlgo_e pgpCompressAlgo
 9.3. More...
 
typedef enum pgpHashAlgo_e pgpHashAlgo
 9.4. More...
 
typedef struct pgpPktSigV3_spgpPktSigV3
 5.2.2. More...
 
typedef struct pgpPktSigV4_spgpPktSigV4
 5.2.3. More...
 
typedef enum pgpSubType_e pgpSubType
 5.2.3.1. More...
 
typedef union pgpPktSig_upgpPktSig
 5.2. More...
 
typedef struct pgpPktOnepass_spgpPktOnepass
 5.4. More...
 
typedef struct pgpPktKeyV3_spgpPktKeyV3
 5.5.1. More...
 
typedef struct pgpPktKeyV4_spgpPktKeyV4
 The version 4 format is similar to the version 3 format except for the absence of a validity period. More...
 
typedef union pgpPktKey_u pgpPktKey
 5.5.3. More...
 
typedef enum pgpArmor_e pgpArmor
 
typedef enum pgpArmorKey_e pgpArmorKey
 

Enumerations

enum  pgpTag_e {
  PGPTAG_RESERVED = 0, PGPTAG_PUBLIC_SESSION_KEY = 1, PGPTAG_SIGNATURE = 2, PGPTAG_SYMMETRIC_SESSION_KEY = 3,
  PGPTAG_ONEPASS_SIGNATURE = 4, PGPTAG_SECRET_KEY = 5, PGPTAG_PUBLIC_KEY = 6, PGPTAG_SECRET_SUBKEY = 7,
  PGPTAG_COMPRESSED_DATA = 8, PGPTAG_SYMMETRIC_DATA = 9, PGPTAG_MARKER = 10, PGPTAG_LITERAL_DATA = 11,
  PGPTAG_TRUST = 12, PGPTAG_USER_ID = 13, PGPTAG_PUBLIC_SUBKEY = 14, PGPTAG_COMMENT_OLD = 16,
  PGPTAG_PHOTOID = 17, PGPTAG_ENCRYPTED_MDC = 18, PGPTAG_MDC = 19, PGPTAG_PRIVATE_60 = 60,
  PGPTAG_COMMENT = 61, PGPTAG_PRIVATE_62 = 62, PGPTAG_CONTROL = 63
}
 4.3. More...
 
enum  pgpSigType_e {
  PGPSIGTYPE_BINARY = 0x00, PGPSIGTYPE_TEXT = 0x01, PGPSIGTYPE_STANDALONE = 0x02, PGPSIGTYPE_GENERIC_CERT = 0x10,
  PGPSIGTYPE_PERSONA_CERT = 0x11, PGPSIGTYPE_CASUAL_CERT = 0x12, PGPSIGTYPE_POSITIVE_CERT = 0x13, PGPSIGTYPE_SUBKEY_BINDING = 0x18,
  PGPSIGTYPE_SIGNED_KEY = 0x1F, PGPSIGTYPE_KEY_REVOKE = 0x20, PGPSIGTYPE_SUBKEY_REVOKE = 0x28, PGPSIGTYPE_CERT_REVOKE = 0x30,
  PGPSIGTYPE_TIMESTAMP = 0x40
}
 5.2.1. More...
 
enum  pgpPubkeyAlgo_e {
  PGPPUBKEYALGO_RSA = 1, PGPPUBKEYALGO_RSA_ENCRYPT = 2, PGPPUBKEYALGO_RSA_SIGN = 3, PGPPUBKEYALGO_ELGAMAL_ENCRYPT = 16,
  PGPPUBKEYALGO_DSA = 17, PGPPUBKEYALGO_EC = 18, PGPPUBKEYALGO_ECDSA = 19, PGPPUBKEYALGO_ELGAMAL = 20,
  PGPPUBKEYALGO_DH = 21
}
 9.1. More...
 
enum  pgpSymkeyAlgo_e {
  PGPSYMKEYALGO_PLAINTEXT = 0, PGPSYMKEYALGO_IDEA = 1, PGPSYMKEYALGO_TRIPLE_DES = 2, PGPSYMKEYALGO_CAST5 = 3,
  PGPSYMKEYALGO_BLOWFISH = 4, PGPSYMKEYALGO_SAFER = 5, PGPSYMKEYALGO_DES_SK = 6, PGPSYMKEYALGO_AES_128 = 7,
  PGPSYMKEYALGO_AES_192 = 8, PGPSYMKEYALGO_AES_256 = 9, PGPSYMKEYALGO_TWOFISH = 10, PGPSYMKEYALGO_NOENCRYPT = 110
}
 9.2. More...
 
enum  pgpCompressAlgo_e { PGPCOMPRESSALGO_NONE = 0, PGPCOMPRESSALGO_ZIP = 1, PGPCOMPRESSALGO_ZLIB = 2, PGPCOMPRESSALGO_BZIP2 = 3 }
 9.3. More...
 
enum  pgpHashAlgo_e {
  PGPHASHALGO_MD5 = 1, PGPHASHALGO_SHA1 = 2, PGPHASHALGO_RIPEMD160 = 3, PGPHASHALGO_MD2 = 5,
  PGPHASHALGO_TIGER192 = 6, PGPHASHALGO_HAVAL_5_160 = 7, PGPHASHALGO_SHA256 = 8, PGPHASHALGO_SHA384 = 9,
  PGPHASHALGO_SHA512 = 10, PGPHASHALGO_SHA224 = 11
}
 9.4. More...
 
enum  pgpSubType_e {
  PGPSUBTYPE_NONE = 0, PGPSUBTYPE_SIG_CREATE_TIME = 2, PGPSUBTYPE_SIG_EXPIRE_TIME = 3, PGPSUBTYPE_EXPORTABLE_CERT = 4,
  PGPSUBTYPE_TRUST_SIG = 5, PGPSUBTYPE_REGEX = 6, PGPSUBTYPE_REVOCABLE = 7, PGPSUBTYPE_KEY_EXPIRE_TIME = 9,
  PGPSUBTYPE_ARR = 10, PGPSUBTYPE_PREFER_SYMKEY = 11, PGPSUBTYPE_REVOKE_KEY = 12, PGPSUBTYPE_ISSUER_KEYID = 16,
  PGPSUBTYPE_NOTATION = 20, PGPSUBTYPE_PREFER_HASH = 21, PGPSUBTYPE_PREFER_COMPRESS = 22, PGPSUBTYPE_KEYSERVER_PREFERS = 23,
  PGPSUBTYPE_PREFER_KEYSERVER = 24, PGPSUBTYPE_PRIMARY_USERID = 25, PGPSUBTYPE_POLICY_URL = 26, PGPSUBTYPE_KEY_FLAGS = 27,
  PGPSUBTYPE_SIGNER_USERID = 28, PGPSUBTYPE_REVOKE_REASON = 29, PGPSUBTYPE_FEATURES = 30, PGPSUBTYPE_EMBEDDED_SIG = 32,
  PGPSUBTYPE_INTERNAL_100 = 100, PGPSUBTYPE_INTERNAL_101 = 101, PGPSUBTYPE_INTERNAL_102 = 102, PGPSUBTYPE_INTERNAL_103 = 103,
  PGPSUBTYPE_INTERNAL_104 = 104, PGPSUBTYPE_INTERNAL_105 = 105, PGPSUBTYPE_INTERNAL_106 = 106, PGPSUBTYPE_INTERNAL_107 = 107,
  PGPSUBTYPE_INTERNAL_108 = 108, PGPSUBTYPE_INTERNAL_109 = 109, PGPSUBTYPE_INTERNAL_110 = 110, PGPSUBTYPE_CRITICAL = 128
}
 5.2.3.1. More...
 
enum  pgpArmor_e {
  PGPARMOR_ERR_CRC_CHECK = -7, PGPARMOR_ERR_BODY_DECODE = -6, PGPARMOR_ERR_CRC_DECODE = -5, PGPARMOR_ERR_NO_END_PGP = -4,
  PGPARMOR_ERR_UNKNOWN_PREAMBLE_TAG = -3, PGPARMOR_ERR_UNKNOWN_ARMOR_TYPE = -2, PGPARMOR_ERR_NO_BEGIN_PGP = -1, PGPARMOR_NONE = 0,
  PGPARMOR_MESSAGE = 1, PGPARMOR_PUBKEY = 2, PGPARMOR_SIGNATURE = 3, PGPARMOR_SIGNED_MESSAGE = 4,
  PGPARMOR_FILE = 5, PGPARMOR_PRIVKEY = 6, PGPARMOR_SECKEY = 7
}
 
enum  pgpArmorKey_e {
  PGPARMORKEY_VERSION = 1, PGPARMORKEY_COMMENT = 2, PGPARMORKEY_MESSAGEID = 3, PGPARMORKEY_HASH = 4,
  PGPARMORKEY_CHARSET = 5
}
 
enum  rpmDigestFlags_e { RPMDIGEST_NONE = 0 }
 Bit(s) to control digest operation. More...
 

Functions

const char * pgpValString (pgpValType type, uint8_t val)
 Return string representation of am OpenPGP value. More...
 
static unsigned int pgpGrab (const uint8_t *s, size_t nbytes)
 Return (native-endian) integer from big-endian representation. More...
 
char * pgpHexStr (const uint8_t *p, size_t plen)
 Return hex formatted representation of bytes. More...
 
int pgpPubkeyFingerprint (const uint8_t *pkt, size_t pktlen, uint8_t **fp, size_t *fplen)
 Calculate OpenPGP public key fingerprint. More...
 
int pgpPubkeyKeyID (const uint8_t *pkt, size_t pktlen, pgpKeyID_t keyid)
 Calculate OpenPGP public key Key ID. More...
 
int pgpPrtParams (const uint8_t *pkts, size_t pktlen, unsigned int pkttype, pgpDigParams *ret)
 Parse a OpenPGP packet(s). More...
 
int pgpPrtParamsSubkeys (const uint8_t *pkts, size_t pktlen, pgpDigParams mainkey, pgpDigParams **subkeys, int *subkeysCount)
 Parse subkey parameters from OpenPGP packet(s). More...
 
int pgpPrtPkts (const uint8_t *pkts, size_t pktlen, pgpDig dig, int printing)
 Print/parse a OpenPGP packet(s). More...
 
pgpArmor pgpReadPkts (const char *fn, uint8_t **pkt, size_t *pktlen)
 Parse armored OpenPGP packets from a file. More...
 
pgpArmor pgpParsePkts (const char *armor, uint8_t **pkt, size_t *pktlen)
 Parse armored OpenPGP packets from memory. More...
 
int pgpPubKeyCertLen (const uint8_t *pkts, size_t pktslen, size_t *certlen)
 Return a length of the first public key certificate in a buffer given by pkts that contains one or more certificates. More...
 
char * pgpArmorWrap (int atype, const unsigned char *s, size_t ns)
 Wrap a OpenPGP packets in ascii armor for transport. More...
 
pgpDig pgpNewDig (void)
 Create a container for parsed OpenPGP packet(s). More...
 
void pgpCleanDig (pgpDig dig)
 Release (malloc'd) data from container. More...
 
pgpDig pgpFreeDig (pgpDig dig)
 Destroy a container for parsed OpenPGP packet(s). More...
 
pgpDigParams pgpDigGetParams (pgpDig dig, unsigned int pkttype)
 Retrieve parameters for parsed OpenPGP packet(s). More...
 
int pgpDigParamsCmp (pgpDigParams p1, pgpDigParams p2)
 Compare OpenPGP packet parameters param p1 1st parameter container param p2 2nd parameter container return 1 if the parameters differ, 0 otherwise. More...
 
unsigned int pgpDigParamsAlgo (pgpDigParams digp, unsigned int algotype)
 Retrieve OpenPGP algorithm parameters param digp parameter container param algotype PGPVAL_HASHALGO / PGPVAL_PUBKEYALGO return algorithm value, 0 on error. More...
 
pgpDigParams pgpDigParamsFree (pgpDigParams digp)
 Destroy parsed OpenPGP packet parameter(s). More...
 
rpmRC pgpVerifySignature (pgpDigParams key, pgpDigParams sig, DIGEST_CTX hashctx)
 Verify a PGP signature. More...
 
rpmRC pgpVerifySig (pgpDig dig, DIGEST_CTX hashctx)
 Verify a PGP signature. More...
 
char * pgpIdentItem (pgpDigParams digp)
 Return a string identification of a PGP signature/pubkey. More...
 
int rpmInitCrypto (void)
 Perform cryptography initialization. More...
 
int rpmFreeCrypto (void)
 Shutdown cryptography. More...
 
DIGEST_CTX rpmDigestDup (DIGEST_CTX octx)
 Duplicate a digest context. More...
 
size_t rpmDigestLength (int hashalgo)
 Obtain digest length in bytes. More...
 
DIGEST_CTX rpmDigestInit (int hashalgo, rpmDigestFlags flags)
 Initialize digest. More...
 
int rpmDigestUpdate (DIGEST_CTX ctx, const void *data, size_t len)
 Update context with next plain text buffer. More...
 
int rpmDigestFinal (DIGEST_CTX ctx, void **datap, size_t *lenp, int asAscii)
 Return digest and destroy context. More...
 
rpmDigestBundle rpmDigestBundleNew (void)
 Create a new digest bundle. More...
 
rpmDigestBundle rpmDigestBundleFree (rpmDigestBundle bundle)
 Free a digest bundle and all contained digest contexts. More...
 
int rpmDigestBundleAdd (rpmDigestBundle bundle, int algo, rpmDigestFlags flags)
 Add a new type of digest to a bundle. More...
 
int rpmDigestBundleAddID (rpmDigestBundle bundle, int algo, int id, rpmDigestFlags flags)
 Add a new type of digest to a bundle. More...
 
int rpmDigestBundleUpdate (rpmDigestBundle bundle, const void *data, size_t len)
 Update contexts within bundle with next plain text buffer. More...
 
int rpmDigestBundleFinal (rpmDigestBundle bundle, int id, void **datap, size_t *lenp, int asAscii)
 Return digest from a bundle and destroy context, see rpmDigestFinal(). More...
 
DIGEST_CTX rpmDigestBundleDupCtx (rpmDigestBundle bundle, int id)
 Duplicate a digest context from a bundle. More...
 

Detailed Description

OpenPGP constants and structures from RFC-2440.

Typedef Documentation

◆ DIGEST_CTX

typedef struct DIGEST_CTX_s* DIGEST_CTX

Definition at line 25 of file rpmpgp.h.

◆ pgpArmor

typedef enum pgpArmor_e pgpArmor

◆ pgpArmorKey

typedef enum pgpArmorKey_e pgpArmorKey

◆ pgpCompressAlgo

9.3.

Compression Algorithms

       ID           Algorithm
       --           ---------
       0          - Uncompressed
       1          - ZIP (RFC 1951)
       2          - ZLIB (RFC 1950)
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement uncompressed data. Implementations SHOULD implement ZIP. Implementations MAY implement ZLIB.

◆ pgpDig

typedef struct pgpDig_s* pgpDig

Definition at line 30 of file rpmpgp.h.

◆ pgpDigParams

typedef struct pgpDigParams_s* pgpDigParams

Definition at line 34 of file rpmpgp.h.

◆ pgpHashAlgo

typedef enum pgpHashAlgo_e pgpHashAlgo

9.4.

Hash Algorithms

       ID           Algorithm                              Text Name
       --           ---------                              ---- ----
       1          - MD5                                    "MD5"
       2          - SHA-1                                  "SHA1"
       3          - RIPE-MD/160                            "RIPEMD160"
       4          - Reserved for double-width SHA (experimental)
       5          - MD2                                    "MD2"
       6          - Reserved for TIGER/192                 "TIGER192"
       7          - Reserved for HAVAL (5 pass, 160-bit)    "HAVAL-5-160"
       8          - SHA-256                                "SHA256"
       9          - SHA-384                                "SHA384"
       10         - SHA-512                                "SHA512"
       11         - SHA-224                                "SHA224"
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement SHA-1. Implementations SHOULD implement MD5.

◆ pgpPktKey

typedef union pgpPktKey_u pgpPktKey

5.5.3.

Secret Key Packet Formats

The Secret Key and Secret Subkey packets contain all the data of the Public Key and Public Subkey packets, with additional algorithm- specific secret key data appended, in encrypted form.

The packet contains:

  • A Public Key or Public Subkey packet, as described above
  • One octet indicating string-to-key usage conventions. 0 indicates that the secret key data is not encrypted. 255 indicates that a string-to-key specifier is being given. Any other value is a symmetric-key encryption algorithm specifier.
  • [Optional] If string-to-key usage octet was 255, a one-octet symmetric encryption algorithm.
  • [Optional] If string-to-key usage octet was 255, a string-to-key specifier. The length of the string-to-key specifier is implied by its type, as described above.
  • [Optional] If secret data is encrypted, eight-octet Initial Vector (IV).
  • Encrypted multi-precision integers comprising the secret key data. These algorithm-specific fields are as described below.
  • Two-octet checksum of the plaintext of the algorithm-specific portion (sum of all octets, mod 65536).

    Algorithm Specific Fields for RSA secret keys:

    • multiprecision integer (MPI) of RSA secret exponent d.
    • MPI of RSA secret prime value p.
    • MPI of RSA secret prime value q (p < q).
    • MPI of u, the multiplicative inverse of p, mod q.

    Algorithm Specific Fields for DSA secret keys:

    • MPI of DSA secret exponent x.

    Algorithm Specific Fields for Elgamal secret keys:

    • MPI of Elgamal secret exponent x.

Secret MPI values can be encrypted using a passphrase. If a string- to-key specifier is given, that describes the algorithm for converting the passphrase to a key, else a simple MD5 hash of the passphrase is used. Implementations SHOULD use a string-to-key specifier; the simple hash is for backward compatibility. The cipher for encrypting the MPIs is specified in the secret key packet.

Encryption/decryption of the secret data is done in CFB mode using the key created from the passphrase and the Initial Vector from the packet. A different mode is used with V3 keys (which are only RSA) than with other key formats. With V3 keys, the MPI bit count prefix (i.e., the first two octets) is not encrypted. Only the MPI non- prefix data is encrypted. Furthermore, the CFB state is resynchronized at the beginning of each new MPI value, so that the CFB block boundary is aligned with the start of the MPI data.

With V4 keys, a simpler method is used. All secret MPI values are encrypted in CFB mode, including the MPI bitcount prefix.

The 16-bit checksum that follows the algorithm-specific portion is the algebraic sum, mod 65536, of the plaintext of all the algorithm- specific octets (including MPI prefix and data). With V3 keys, the checksum is stored in the clear. With V4 keys, the checksum is encrypted like the algorithm-specific data. This value is used to check that the passphrase was correct.

◆ pgpPktKeyV3

typedef struct pgpPktKeyV3_s * pgpPktKeyV3

5.5.1.

Key Packet Variants

5.5.1.1. Public Key Packet (Tag 6)

A Public Key packet starts a series of packets that forms an OpenPGP key (sometimes called an OpenPGP certificate).

5.5.1.2. Public Subkey Packet (Tag 14)

A Public Subkey packet (tag 14) has exactly the same format as a Public Key packet, but denotes a subkey. One or more subkeys may be associated with a top-level key. By convention, the top-level key provides signature services, and the subkeys provide encryption services.

Note: in PGP 2.6.x, tag 14 was intended to indicate a comment packet. This tag was selected for reuse because no previous version of PGP ever emitted comment packets but they did properly ignore them. Public Subkey packets are ignored by PGP 2.6.x and do not cause it to fail, providing a limited degree of backward compatibility.

5.5.1.3. Secret Key Packet (Tag 5)

A Secret Key packet contains all the information that is found in a Public Key packet, including the public key material, but also includes the secret key material after all the public key fields.

5.5.1.4. Secret Subkey Packet (Tag 7)

A Secret Subkey packet (tag 7) is the subkey analog of the Secret Key packet, and has exactly the same format.

5.5.2. Public Key Packet Formats

There are two versions of key-material packets. Version 3 packets were first generated by PGP 2.6. Version 2 packets are identical in format to Version 3 packets, but are generated by PGP 2.5 or before. V2 packets are deprecated and they MUST NOT be generated. PGP 5.0 introduced version 4 packets, with new fields and semantics. PGP 2.6.x will not accept key-material packets with versions greater than 3.

OpenPGP implementations SHOULD create keys with version 4 format. An implementation MAY generate a V3 key to ensure interoperability with old software; note, however, that V4 keys correct some security deficiencies in V3 keys. These deficiencies are described below. An implementation MUST NOT create a V3 key with a public key algorithm other than RSA.

A version 3 public key or public subkey packet contains:

  • A one-octet version number (3).
  • A four-octet number denoting the time that the key was created.
  • A two-octet number denoting the time in days that this key is valid. If this number is zero, then it does not expire.
  • A one-octet number denoting the public key algorithm of this key
  • A series of multi-precision integers comprising the key material:
    • a multiprecision integer (MPI) of RSA public modulus n;
    • an MPI of RSA public encryption exponent e.

V3 keys SHOULD only be used for backward compatibility because of three weaknesses in them. First, it is relatively easy to construct a V3 key that has the same key ID as any other key because the key ID is simply the low 64 bits of the public modulus. Secondly, because the fingerprint of a V3 key hashes the key material, but not its length, which increases the opportunity for fingerprint collisions. Third, there are minor weaknesses in the MD5 hash algorithm that make developers prefer other algorithms. See below for a fuller discussion of key IDs and fingerprints.

◆ pgpPktKeyV4

typedef struct pgpPktKeyV4_s * pgpPktKeyV4

The version 4 format is similar to the version 3 format except for the absence of a validity period.

This has been moved to the signature packet. In addition, fingerprints of version 4 keys are calculated differently from version 3 keys, as described in section "Enhanced Key Formats."

A version 4 packet contains:

  • A one-octet version number (4).
  • A four-octet number denoting the time that the key was created.
  • A one-octet number denoting the public key algorithm of this key
  • A series of multi-precision integers comprising the key material. This algorithm-specific portion is:

    Algorithm Specific Fields for RSA public keys:

    • multiprecision integer (MPI) of RSA public modulus n;
    • MPI of RSA public encryption exponent e.

    Algorithm Specific Fields for DSA public keys:

    • MPI of DSA prime p;
    • MPI of DSA group order q (q is a prime divisor of p-1);
    • MPI of DSA group generator g;
    • MPI of DSA public key value y (= g**x where x is secret).

    Algorithm Specific Fields for Elgamal public keys:

    • MPI of Elgamal prime p;
    • MPI of Elgamal group generator g;
    • MPI of Elgamal public key value y (= g**x where x is secret).

◆ pgpPktOnepass

typedef struct pgpPktOnepass_s * pgpPktOnepass

5.4.

One-Pass Signature Packets (Tag 4)

The One-Pass Signature packet precedes the signed data and contains enough information to allow the receiver to begin calculating any hashes needed to verify the signature. It allows the Signature Packet to be placed at the end of the message, so that the signer can compute the entire signed message in one pass.

A One-Pass Signature does not interoperate with PGP 2.6.x or earlier.

The body of this packet consists of:

  • A one-octet version number. The current version is 3.
  • A one-octet signature type. Signature types are described in section 5.2.1.
  • A one-octet number describing the hash algorithm used.
  • A one-octet number describing the public key algorithm used.
  • An eight-octet number holding the key ID of the signing key.
  • A one-octet number holding a flag showing whether the signature is nested. A zero value indicates that the next packet is another One-Pass Signature packet that describes another signature to be applied to the same message data.

Note that if a message contains more than one one-pass signature, then the signature packets bracket the message; that is, the first signature packet after the message corresponds to the last one-pass packet and the final signature packet corresponds to the first one- pass packet.

◆ pgpPktPubkey

typedef struct pgpPktPubkey_s pgpPktPubkey

5.1.

Public-Key Encrypted Session Key Packets (Tag 1)

A Public-Key Encrypted Session Key packet holds the session key used to encrypt a message. Zero or more Encrypted Session Key packets (either Public-Key or Symmetric-Key) may precede a Symmetrically Encrypted Data Packet, which holds an encrypted message. The message is encrypted with the session key, and the session key is itself encrypted and stored in the Encrypted Session Key packet(s). The Symmetrically Encrypted Data Packet is preceded by one Public-Key Encrypted Session Key packet for each OpenPGP key to which the message is encrypted. The recipient of the message finds a session key that is encrypted to their public key, decrypts the session key, and then uses the session key to decrypt the message.

The body of this packet consists of:

  • A one-octet number giving the version number of the packet type. The currently defined value for packet version is 3. An implementation should accept, but not generate a version of 2, which is equivalent to V3 in all other respects.
  • An eight-octet number that gives the key ID of the public key that the session key is encrypted to.
  • A one-octet number giving the public key algorithm used.
  • A string of octets that is the encrypted session key. This string takes up the remainder of the packet, and its contents are dependent on the public key algorithm used.

Algorithm Specific Fields for RSA encryption

  • multiprecision integer (MPI) of RSA encrypted value m**e mod n.

Algorithm Specific Fields for Elgamal encryption:

  • MPI of Elgamal (Diffie-Hellman) value g**k mod p.
  • MPI of Elgamal (Diffie-Hellman) value m * y**k mod p.

◆ pgpPktSig

typedef union pgpPktSig_u * pgpPktSig

5.2.

Signature Packet (Tag 2)

A signature packet describes a binding between some public key and some data. The most common signatures are a signature of a file or a block of text, and a signature that is a certification of a user ID.

Two versions of signature packets are defined. Version 3 provides basic signature information, while version 4 provides an expandable format with subpackets that can specify more information about the signature. PGP 2.6.x only accepts version 3 signatures.

Implementations MUST accept V3 signatures. Implementations SHOULD generate V4 signatures. Implementations MAY generate a V3 signature that can be verified by PGP 2.6.x.

Note that if an implementation is creating an encrypted and signed message that is encrypted to a V3 key, it is reasonable to create a V3 signature.

◆ pgpPktSigV3

typedef struct pgpPktSigV3_s * pgpPktSigV3

5.2.2.

Version 3 Signature Packet Format

The body of a version 3 Signature Packet contains:

  • One-octet version number (3).
  • One-octet length of following hashed material. MUST be 5.
    • One-octet signature type.
    • Four-octet creation time.
  • Eight-octet key ID of signer.
  • One-octet public key algorithm.
  • One-octet hash algorithm.
  • Two-octet field holding left 16 bits of signed hash value.
  • One or more multi-precision integers comprising the signature.

Algorithm Specific Fields for RSA signatures:

  • multiprecision integer (MPI) of RSA signature value m**d.

Algorithm Specific Fields for DSA signatures:

  • MPI of DSA value r.
  • MPI of DSA value s.

◆ pgpPktSigV4

typedef struct pgpPktSigV4_s * pgpPktSigV4

5.2.3.

Version 4 Signature Packet Format

The body of a version 4 Signature Packet contains:

  • One-octet version number (4).
  • One-octet signature type.
  • One-octet public key algorithm.
  • One-octet hash algorithm.
  • Two-octet scalar octet count for following hashed subpacket data. Note that this is the length in octets of all of the hashed subpackets; a pointer incremented by this number will skip over the hashed subpackets.
  • Hashed subpacket data. (zero or more subpackets)
  • Two-octet scalar octet count for following unhashed subpacket data. Note that this is the length in octets of all of the unhashed subpackets; a pointer incremented by this number will skip over the unhashed subpackets.
  • Unhashed subpacket data. (zero or more subpackets)
  • Two-octet field holding left 16 bits of signed hash value.
  • One or more multi-precision integers comprising the signature.

◆ pgpPubkeyAlgo

9.1.

Public Key Algorithms

       ID           Algorithm
       --           ---------
       1          - RSA (Encrypt or Sign)
       2          - RSA Encrypt-Only
       3          - RSA Sign-Only
       16         - Elgamal (Encrypt-Only), see [ELGAMAL]
       17         - DSA (Digital Signature Standard)
       18         - Reserved for Elliptic Curve
       19         - Reserved for ECDSA
       20         - Elgamal (Encrypt or Sign)
       21         - Reserved for Diffie-Hellman (X9.42,
                    as defined for IETF-S/MIME)
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement DSA for signatures, and Elgamal for encryption. Implementations SHOULD implement RSA keys. Implementations MAY implement any other algorithm.

◆ pgpSigType

typedef enum pgpSigType_e pgpSigType

5.2.1.

Signature Types

There are a number of possible meanings for a signature, which are specified in a signature type octet in any given signature.

◆ pgpSubType

typedef enum pgpSubType_e pgpSubType

5.2.3.1.

Signature Subpacket Specification

The subpacket fields consist of zero or more signature subpackets. Each set of subpackets is preceded by a two-octet scalar count of the length of the set of subpackets.

Each subpacket consists of a subpacket header and a body. The header consists of:

  • the subpacket length (1, 2, or 5 octets)
  • the subpacket type (1 octet) and is followed by the subpacket specific data.

The length includes the type octet but not this length. Its format is similar to the "new" format packet header lengths, but cannot have partial body lengths. That is:

       if the 1st octet <  192, then
           lengthOfLength = 1
           subpacketLen = 1st_octet

       if the 1st octet >= 192 and < 255, then
           lengthOfLength = 2
           subpacketLen = ((1st_octet - 192) << 8) + (2nd_octet) + 192

       if the 1st octet = 255, then
           lengthOfLength = 5
           subpacket length = [four-octet scalar starting at 2nd_octet]

The value of the subpacket type octet may be:

       2 = signature creation time
       3 = signature expiration time
       4 = exportable certification
       5 = trust signature
       6 = regular expression
       7 = revocable
       9 = key expiration time
       10 = placeholder for backward compatibility
       11 = preferred symmetric algorithms
       12 = revocation key
       16 = issuer key ID
       20 = notation data
       21 = preferred hash algorithms
       22 = preferred compression algorithms
       23 = key server preferences
       24 = preferred key server
       25 = primary user id
       26 = policy URL
       27 = key flags
       28 = signer's user id
       29 = reason for revocation
       100 to 110 = internal or user-defined

An implementation SHOULD ignore any subpacket of a type that it does not recognize.

Bit 7 of the subpacket type is the "critical" bit. If set, it denotes that the subpacket is one that is critical for the evaluator of the signature to recognize. If a subpacket is encountered that is marked critical but is unknown to the evaluating software, the evaluator SHOULD consider the signature to be in error.

◆ pgpSymkeyAlgo

9.2.

Symmetric Key Algorithms

       ID           Algorithm
       --           ---------
       0          - Plaintext or unencrypted data
       1          - IDEA [IDEA]
       2          - Triple-DES (DES-EDE, as per spec -
                    168 bit key derived from 192)
       3          - CAST5 (128 bit key, as per RFC 2144)
       4          - Blowfish (128 bit key, 16 rounds) [BLOWFISH]
       5          - SAFER-SK128 (13 rounds) [SAFER]
       6          - Reserved for DES/SK
       7          - Reserved for AES with 128-bit key
       8          - Reserved for AES with 192-bit key
       9          - Reserved for AES with 256-bit key
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement Triple-DES. Implementations SHOULD implement IDEA and CAST5. Implementations MAY implement any other algorithm.

◆ pgpTag

typedef enum pgpTag_e pgpTag

4.3.

Packet Tags

The packet tag denotes what type of packet the body holds. Note that old format headers can only have tags less than 16, whereas new format headers can have tags as great as 63.

Enumeration Type Documentation

◆ pgpArmor_e

enum pgpArmor_e
Enumerator
PGPARMOR_ERR_CRC_CHECK 
PGPARMOR_ERR_BODY_DECODE 
PGPARMOR_ERR_CRC_DECODE 
PGPARMOR_ERR_NO_END_PGP 
PGPARMOR_ERR_UNKNOWN_PREAMBLE_TAG 
PGPARMOR_ERR_UNKNOWN_ARMOR_TYPE 
PGPARMOR_ERR_NO_BEGIN_PGP 
PGPARMOR_NONE 
PGPARMOR_MESSAGE 

MESSAGE

PGPARMOR_PUBKEY 

PUBLIC KEY BLOCK

PGPARMOR_SIGNATURE 

SIGNATURE

PGPARMOR_SIGNED_MESSAGE 

SIGNED MESSAGE

PGPARMOR_FILE 

ARMORED FILE

PGPARMOR_PRIVKEY 

PRIVATE KEY BLOCK

PGPARMOR_SECKEY 

SECRET KEY BLOCK

Definition at line 890 of file rpmpgp.h.

◆ pgpArmorKey_e

Enumerator
PGPARMORKEY_VERSION 

Version:

PGPARMORKEY_COMMENT 

Comment:

PGPARMORKEY_MESSAGEID 

MessageID:

PGPARMORKEY_HASH 

Hash:

PGPARMORKEY_CHARSET 

Charset:

Definition at line 911 of file rpmpgp.h.

◆ pgpCompressAlgo_e

9.3.

Compression Algorithms

       ID           Algorithm
       --           ---------
       0          - Uncompressed
       1          - ZIP (RFC 1951)
       2          - ZLIB (RFC 1950)
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement uncompressed data. Implementations SHOULD implement ZIP. Implementations MAY implement ZLIB.

Enumerator
PGPCOMPRESSALGO_NONE 

Uncompressed

PGPCOMPRESSALGO_ZIP 

ZIP

PGPCOMPRESSALGO_ZLIB 

ZLIB

PGPCOMPRESSALGO_BZIP2 

BZIP2

Definition at line 228 of file rpmpgp.h.

◆ pgpHashAlgo_e

9.4.

Hash Algorithms

       ID           Algorithm                              Text Name
       --           ---------                              ---- ----
       1          - MD5                                    "MD5"
       2          - SHA-1                                  "SHA1"
       3          - RIPE-MD/160                            "RIPEMD160"
       4          - Reserved for double-width SHA (experimental)
       5          - MD2                                    "MD2"
       6          - Reserved for TIGER/192                 "TIGER192"
       7          - Reserved for HAVAL (5 pass, 160-bit)    "HAVAL-5-160"
       8          - SHA-256                                "SHA256"
       9          - SHA-384                                "SHA384"
       10         - SHA-512                                "SHA512"
       11         - SHA-224                                "SHA224"
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement SHA-1. Implementations SHOULD implement MD5.

Enumerator
PGPHASHALGO_MD5 

MD5

PGPHASHALGO_SHA1 

SHA1

PGPHASHALGO_RIPEMD160 

RIPEMD160

PGPHASHALGO_MD2 

MD2

PGPHASHALGO_TIGER192 

TIGER192

PGPHASHALGO_HAVAL_5_160 

HAVAL-5-160

PGPHASHALGO_SHA256 

SHA256

PGPHASHALGO_SHA384 

SHA384

PGPHASHALGO_SHA512 

SHA512

PGPHASHALGO_SHA224 

SHA224

Definition at line 258 of file rpmpgp.h.

◆ pgpPubkeyAlgo_e

9.1.

Public Key Algorithms

       ID           Algorithm
       --           ---------
       1          - RSA (Encrypt or Sign)
       2          - RSA Encrypt-Only
       3          - RSA Sign-Only
       16         - Elgamal (Encrypt-Only), see [ELGAMAL]
       17         - DSA (Digital Signature Standard)
       18         - Reserved for Elliptic Curve
       19         - Reserved for ECDSA
       20         - Elgamal (Encrypt or Sign)
       21         - Reserved for Diffie-Hellman (X9.42,
                    as defined for IETF-S/MIME)
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement DSA for signatures, and Elgamal for encryption. Implementations SHOULD implement RSA keys. Implementations MAY implement any other algorithm.

Enumerator
PGPPUBKEYALGO_RSA 

RSA

PGPPUBKEYALGO_RSA_ENCRYPT 

RSA(Encrypt-Only)

PGPPUBKEYALGO_RSA_SIGN 

RSA(Sign-Only)

PGPPUBKEYALGO_ELGAMAL_ENCRYPT 

Elgamal(Encrypt-Only)

PGPPUBKEYALGO_DSA 

DSA

PGPPUBKEYALGO_EC 

Elliptic Curve

PGPPUBKEYALGO_ECDSA 

ECDSA

PGPPUBKEYALGO_ELGAMAL 

Elgamal

PGPPUBKEYALGO_DH 

Diffie-Hellman (X9.42)

Definition at line 162 of file rpmpgp.h.

◆ pgpSigType_e

5.2.1.

Signature Types

There are a number of possible meanings for a signature, which are specified in a signature type octet in any given signature.

Enumerator
PGPSIGTYPE_BINARY 

Binary document

PGPSIGTYPE_TEXT 

Canonical text document

PGPSIGTYPE_STANDALONE 

Standalone

PGPSIGTYPE_GENERIC_CERT 

Generic certification of a User ID & Public Key

PGPSIGTYPE_PERSONA_CERT 

Persona certification of a User ID & Public Key

PGPSIGTYPE_CASUAL_CERT 

Casual certification of a User ID & Public Key

PGPSIGTYPE_POSITIVE_CERT 

Positive certification of a User ID & Public Key

PGPSIGTYPE_SUBKEY_BINDING 

Subkey Binding

PGPSIGTYPE_SIGNED_KEY 

Signature directly on a key

PGPSIGTYPE_KEY_REVOKE 

Key revocation

PGPSIGTYPE_SUBKEY_REVOKE 

Subkey revocation

PGPSIGTYPE_CERT_REVOKE 

Certification revocation

PGPSIGTYPE_TIMESTAMP 

Timestamp

Definition at line 119 of file rpmpgp.h.

◆ pgpSubType_e

5.2.3.1.

Signature Subpacket Specification

The subpacket fields consist of zero or more signature subpackets. Each set of subpackets is preceded by a two-octet scalar count of the length of the set of subpackets.

Each subpacket consists of a subpacket header and a body. The header consists of:

  • the subpacket length (1, 2, or 5 octets)
  • the subpacket type (1 octet) and is followed by the subpacket specific data.

The length includes the type octet but not this length. Its format is similar to the "new" format packet header lengths, but cannot have partial body lengths. That is:

       if the 1st octet <  192, then
           lengthOfLength = 1
           subpacketLen = 1st_octet

       if the 1st octet >= 192 and < 255, then
           lengthOfLength = 2
           subpacketLen = ((1st_octet - 192) << 8) + (2nd_octet) + 192

       if the 1st octet = 255, then
           lengthOfLength = 5
           subpacket length = [four-octet scalar starting at 2nd_octet]

The value of the subpacket type octet may be:

       2 = signature creation time
       3 = signature expiration time
       4 = exportable certification
       5 = trust signature
       6 = regular expression
       7 = revocable
       9 = key expiration time
       10 = placeholder for backward compatibility
       11 = preferred symmetric algorithms
       12 = revocation key
       16 = issuer key ID
       20 = notation data
       21 = preferred hash algorithms
       22 = preferred compression algorithms
       23 = key server preferences
       24 = preferred key server
       25 = primary user id
       26 = policy URL
       27 = key flags
       28 = signer's user id
       29 = reason for revocation
       100 to 110 = internal or user-defined

An implementation SHOULD ignore any subpacket of a type that it does not recognize.

Bit 7 of the subpacket type is the "critical" bit. If set, it denotes that the subpacket is one that is critical for the evaluator of the signature to recognize. If a subpacket is encountered that is marked critical but is unknown to the evaluating software, the evaluator SHOULD consider the signature to be in error.

Enumerator
PGPSUBTYPE_NONE 

none

PGPSUBTYPE_SIG_CREATE_TIME 

signature creation time

PGPSUBTYPE_SIG_EXPIRE_TIME 

signature expiration time

PGPSUBTYPE_EXPORTABLE_CERT 

exportable certification

PGPSUBTYPE_TRUST_SIG 

trust signature

PGPSUBTYPE_REGEX 

regular expression

PGPSUBTYPE_REVOCABLE 

revocable

PGPSUBTYPE_KEY_EXPIRE_TIME 

key expiration time

PGPSUBTYPE_ARR 

additional recipient request

PGPSUBTYPE_PREFER_SYMKEY 

preferred symmetric algorithms

PGPSUBTYPE_REVOKE_KEY 

revocation key

PGPSUBTYPE_ISSUER_KEYID 

issuer key ID

PGPSUBTYPE_NOTATION 

notation data

PGPSUBTYPE_PREFER_HASH 

preferred hash algorithms

PGPSUBTYPE_PREFER_COMPRESS 

preferred compression algorithms

PGPSUBTYPE_KEYSERVER_PREFERS 

key server preferences

PGPSUBTYPE_PREFER_KEYSERVER 

preferred key server

PGPSUBTYPE_PRIMARY_USERID 

primary user id

PGPSUBTYPE_POLICY_URL 

policy URL

PGPSUBTYPE_KEY_FLAGS 

key flags

PGPSUBTYPE_SIGNER_USERID 

signer's user id

PGPSUBTYPE_REVOKE_REASON 

reason for revocation

PGPSUBTYPE_FEATURES 

feature flags (gpg)

PGPSUBTYPE_EMBEDDED_SIG 

embedded signature (gpg)

PGPSUBTYPE_INTERNAL_100 

internal or user-defined

PGPSUBTYPE_INTERNAL_101 

internal or user-defined

PGPSUBTYPE_INTERNAL_102 

internal or user-defined

PGPSUBTYPE_INTERNAL_103 

internal or user-defined

PGPSUBTYPE_INTERNAL_104 

internal or user-defined

PGPSUBTYPE_INTERNAL_105 

internal or user-defined

PGPSUBTYPE_INTERNAL_106 

internal or user-defined

PGPSUBTYPE_INTERNAL_107 

internal or user-defined

PGPSUBTYPE_INTERNAL_108 

internal or user-defined

PGPSUBTYPE_INTERNAL_109 

internal or user-defined

PGPSUBTYPE_INTERNAL_110 

internal or user-defined

PGPSUBTYPE_CRITICAL 

critical subpacket marker

Definition at line 398 of file rpmpgp.h.

◆ pgpSymkeyAlgo_e

9.2.

Symmetric Key Algorithms

       ID           Algorithm
       --           ---------
       0          - Plaintext or unencrypted data
       1          - IDEA [IDEA]
       2          - Triple-DES (DES-EDE, as per spec -
                    168 bit key derived from 192)
       3          - CAST5 (128 bit key, as per RFC 2144)
       4          - Blowfish (128 bit key, 16 rounds) [BLOWFISH]
       5          - SAFER-SK128 (13 rounds) [SAFER]
       6          - Reserved for DES/SK
       7          - Reserved for AES with 128-bit key
       8          - Reserved for AES with 192-bit key
       9          - Reserved for AES with 256-bit key
       100 to 110 - Private/Experimental algorithm.

Implementations MUST implement Triple-DES. Implementations SHOULD implement IDEA and CAST5. Implementations MAY implement any other algorithm.

Enumerator
PGPSYMKEYALGO_PLAINTEXT 

Plaintext

PGPSYMKEYALGO_IDEA 

IDEA

PGPSYMKEYALGO_TRIPLE_DES 

3DES

PGPSYMKEYALGO_CAST5 

CAST5

PGPSYMKEYALGO_BLOWFISH 

BLOWFISH

PGPSYMKEYALGO_SAFER 

SAFER

PGPSYMKEYALGO_DES_SK 

DES/SK

PGPSYMKEYALGO_AES_128 

AES(128-bit key)

PGPSYMKEYALGO_AES_192 

AES(192-bit key)

PGPSYMKEYALGO_AES_256 

AES(256-bit key)

PGPSYMKEYALGO_TWOFISH 

TWOFISH(256-bit key)

PGPSYMKEYALGO_NOENCRYPT 

no encryption

Definition at line 198 of file rpmpgp.h.

◆ pgpTag_e

enum pgpTag_e

4.3.

Packet Tags

The packet tag denotes what type of packet the body holds. Note that old format headers can only have tags less than 16, whereas new format headers can have tags as great as 63.

Enumerator
PGPTAG_RESERVED 

Reserved/Invalid

PGPTAG_PUBLIC_SESSION_KEY 

Public-Key Encrypted Session Key

PGPTAG_SIGNATURE 

Signature

PGPTAG_SYMMETRIC_SESSION_KEY 

Symmetric-Key Encrypted Session Key

PGPTAG_ONEPASS_SIGNATURE 

One-Pass Signature

PGPTAG_SECRET_KEY 

Secret Key

PGPTAG_PUBLIC_KEY 

Public Key

PGPTAG_SECRET_SUBKEY 

Secret Subkey

PGPTAG_COMPRESSED_DATA 

Compressed Data

PGPTAG_SYMMETRIC_DATA 

Symmetrically Encrypted Data

PGPTAG_MARKER 

Marker

PGPTAG_LITERAL_DATA 

Literal Data

PGPTAG_TRUST 

Trust

PGPTAG_USER_ID 

User ID

PGPTAG_PUBLIC_SUBKEY 

Public Subkey

PGPTAG_COMMENT_OLD 

Comment (from OpenPGP draft)

PGPTAG_PHOTOID 

PGP's photo ID

PGPTAG_ENCRYPTED_MDC 

Integrity protected encrypted data

PGPTAG_MDC 

Manipulaion detection code packet

PGPTAG_PRIVATE_60 

Private or Experimental Values

PGPTAG_COMMENT 

Comment

PGPTAG_PRIVATE_62 

Private or Experimental Values

PGPTAG_CONTROL 

Control (GPG)

Definition at line 46 of file rpmpgp.h.

◆ rpmDigestFlags_e

Bit(s) to control digest operation.

Enumerator
RPMDIGEST_NONE 

Definition at line 935 of file rpmpgp.h.

Function Documentation

◆ pgpArmorWrap()

char* pgpArmorWrap ( int  atype,
const unsigned char *  s,
size_t  ns 
)

Wrap a OpenPGP packets in ascii armor for transport.

Parameters
atypetype of armor
sbinary pkt data
nsbinary pkt data length
Returns
formatted string

◆ pgpCleanDig()

void pgpCleanDig ( pgpDig  dig)

Release (malloc'd) data from container.

Parameters
digcontainer

◆ pgpDigGetParams()

pgpDigParams pgpDigGetParams ( pgpDig  dig,
unsigned int  pkttype 
)

Retrieve parameters for parsed OpenPGP packet(s).

Parameters
digcontainer
pkttypetype of params to retrieve (signature / pubkey)
Returns
pointer to OpenPGP parameters, NULL on error/not found

◆ pgpDigParamsAlgo()

unsigned int pgpDigParamsAlgo ( pgpDigParams  digp,
unsigned int  algotype 
)

Retrieve OpenPGP algorithm parameters param digp parameter container param algotype PGPVAL_HASHALGO / PGPVAL_PUBKEYALGO return algorithm value, 0 on error.

◆ pgpDigParamsCmp()

int pgpDigParamsCmp ( pgpDigParams  p1,
pgpDigParams  p2 
)

Compare OpenPGP packet parameters param p1 1st parameter container param p2 2nd parameter container return 1 if the parameters differ, 0 otherwise.

◆ pgpDigParamsFree()

pgpDigParams pgpDigParamsFree ( pgpDigParams  digp)

Destroy parsed OpenPGP packet parameter(s).

Parameters
digpparameter container
Returns
NULL always

◆ pgpFreeDig()

pgpDig pgpFreeDig ( pgpDig  dig)

Destroy a container for parsed OpenPGP packet(s).

Parameters
digcontainer
Returns
NULL always

◆ pgpGrab()

static unsigned int pgpGrab ( const uint8_t *  s,
size_t  nbytes 
)
inlinestatic

Return (native-endian) integer from big-endian representation.

Parameters
spointer to big-endian integer
nbytesno. of bytes
Returns
native-endian integer

Definition at line 956 of file rpmpgp.h.

◆ pgpHexStr()

char* pgpHexStr ( const uint8_t *  p,
size_t  plen 
)

Return hex formatted representation of bytes.

Parameters
pbytes
plenno. of bytes
Returns
hex formatted string (malloc'ed)

◆ pgpIdentItem()

char* pgpIdentItem ( pgpDigParams  digp)

Return a string identification of a PGP signature/pubkey.

Parameters
digpsignature/pubkey container
Returns
string describing the item and parameters

◆ pgpNewDig()

pgpDig pgpNewDig ( void  )

Create a container for parsed OpenPGP packet(s).

Returns
container

◆ pgpParsePkts()

pgpArmor pgpParsePkts ( const char *  armor,
uint8_t **  pkt,
size_t *  pktlen 
)

Parse armored OpenPGP packets from memory.

Parameters
armorarmored OpenPGP packet string
Return values
pktdearmored OpenPGP packet(s) (malloced)
pktlendearmored OpenPGP packet(s) length in bytes
Returns
type of armor found

◆ pgpPrtParams()

int pgpPrtParams ( const uint8_t *  pkts,
size_t  pktlen,
unsigned int  pkttype,
pgpDigParams ret 
)

Parse a OpenPGP packet(s).

Parameters
pktsOpenPGP packet(s)
pktlenOpenPGP packet(s) length (no. of bytes)
pkttypeExpected packet type (signature/key) or 0 for any
Return values
retsignature/pubkey packet parameters on success (alloced)
Returns
-1 on error, 0 on success

◆ pgpPrtParamsSubkeys()

int pgpPrtParamsSubkeys ( const uint8_t *  pkts,
size_t  pktlen,
pgpDigParams  mainkey,
pgpDigParams **  subkeys,
int *  subkeysCount 
)

Parse subkey parameters from OpenPGP packet(s).

Parameters
pktsOpenPGP packet(s)
pktlenOpenPGP packet(s) length (no. of bytes)
mainkeyparameters of main key
subkeysarray of subkey parameters (alloced)
subkeysCountcount of subkeys
Returns
-1 on error, 0 on success

◆ pgpPrtPkts()

int pgpPrtPkts ( const uint8_t *  pkts,
size_t  pktlen,
pgpDig  dig,
int  printing 
)

Print/parse a OpenPGP packet(s).

Parameters
pktsOpenPGP packet(s)
pktlenOpenPGP packet(s) length (no. of bytes)
Return values
digparsed output of signature/pubkey packet parameters
Parameters
printingshould packets be printed?
Returns
-1 on error, 0 on success

◆ pgpPubKeyCertLen()

int pgpPubKeyCertLen ( const uint8_t *  pkts,
size_t  pktslen,
size_t *  certlen 
)

Return a length of the first public key certificate in a buffer given by pkts that contains one or more certificates.

A public key certificate consits of packets like Public key packet, User ID packet and so on. In a buffer every certificate starts with Public key packet and it ends with the start of the next certificate or with the end of the buffer.

Parameters
pktspointer to a buffer with certificates
pktslenlength of the buffer with certificates
certlenlength of the first certificate in the buffer
Returns
0 on success

◆ pgpPubkeyFingerprint()

int pgpPubkeyFingerprint ( const uint8_t *  pkt,
size_t  pktlen,
uint8_t **  fp,
size_t *  fplen 
)

Calculate OpenPGP public key fingerprint.

Parameters
pktOpenPGP packet (i.e. PGPTAG_PUBLIC_KEY)
pktlenOpenPGP packet length (no. of bytes)
Return values
fppublic key fingerprint
fplenpublic key fingerprint length
Returns
0 on success, else -1

◆ pgpPubkeyKeyID()

int pgpPubkeyKeyID ( const uint8_t *  pkt,
size_t  pktlen,
pgpKeyID_t  keyid 
)

Calculate OpenPGP public key Key ID.

Parameters
pktOpenPGP packet (i.e. PGPTAG_PUBLIC_KEY)
pktlenOpenPGP packet length (no. of bytes)
Return values
keyidpublic key Key ID
Returns
0 on success, else -1

◆ pgpReadPkts()

pgpArmor pgpReadPkts ( const char *  fn,
uint8_t **  pkt,
size_t *  pktlen 
)

Parse armored OpenPGP packets from a file.

Parameters
fnfile name
Return values
pktdearmored OpenPGP packet(s) (malloced)
pktlendearmored OpenPGP packet(s) length in bytes
Returns
type of armor found

◆ pgpValString()

const char* pgpValString ( pgpValType  type,
uint8_t  val 
)

Return string representation of am OpenPGP value.

Parameters
typetype of value
valbyte value to lookup
Returns
string value of byte

◆ pgpVerifySig()

rpmRC pgpVerifySig ( pgpDig  dig,
DIGEST_CTX  hashctx 
)

Verify a PGP signature.

Deprecated:
use pgpVerifySignature() instead
Parameters
digcontainer
hashctxdigest context
Returns
RPMRC_OK on success

◆ pgpVerifySignature()

rpmRC pgpVerifySignature ( pgpDigParams  key,
pgpDigParams  sig,
DIGEST_CTX  hashctx 
)

Verify a PGP signature.

Parameters
keypublic key
sigsignature
hashctxdigest context
Returns
RPMRC_OK on success

◆ rpmDigestBundleAdd()

int rpmDigestBundleAdd ( rpmDigestBundle  bundle,
int  algo,
rpmDigestFlags  flags 
)

Add a new type of digest to a bundle.

Same as calling rpmDigestBundleAddID() with algo == id value.

Parameters
bundledigest bundle
algotype of digest
flagsbit(s) to control digest operation
Returns
0 on success

◆ rpmDigestBundleAddID()

int rpmDigestBundleAddID ( rpmDigestBundle  bundle,
int  algo,
int  id,
rpmDigestFlags  flags 
)

Add a new type of digest to a bundle.

Parameters
bundledigest bundle
algotype of digest
idid of digest (arbitrary, must be > 0)
flagsbit(s) to control digest operation
Returns
0 on success

◆ rpmDigestBundleDupCtx()

DIGEST_CTX rpmDigestBundleDupCtx ( rpmDigestBundle  bundle,
int  id 
)

Duplicate a digest context from a bundle.

Parameters
bundledigest bundle
idid of digest to dup
Returns
duplicated digest context

◆ rpmDigestBundleFinal()

int rpmDigestBundleFinal ( rpmDigestBundle  bundle,
int  id,
void **  datap,
size_t *  lenp,
int  asAscii 
)

Return digest from a bundle and destroy context, see rpmDigestFinal().

Parameters
bundledigest bundle
idid of digest to return
Return values
datapaddress of returned digest
lenpaddress of digest length
Parameters
asAsciireturn digest as ascii string?
Returns
0 on success

◆ rpmDigestBundleFree()

rpmDigestBundle rpmDigestBundleFree ( rpmDigestBundle  bundle)

Free a digest bundle and all contained digest contexts.

Parameters
bundledigest bundle
Returns
NULL always

◆ rpmDigestBundleNew()

rpmDigestBundle rpmDigestBundleNew ( void  )

Create a new digest bundle.

Returns
New digest bundle

◆ rpmDigestBundleUpdate()

int rpmDigestBundleUpdate ( rpmDigestBundle  bundle,
const void *  data,
size_t  len 
)

Update contexts within bundle with next plain text buffer.

Parameters
bundledigest bundle
datanext data buffer
lenno. bytes of data
Returns
0 on success

◆ rpmDigestDup()

DIGEST_CTX rpmDigestDup ( DIGEST_CTX  octx)

Duplicate a digest context.

Parameters
octxexisting digest context
Returns
duplicated digest context

◆ rpmDigestFinal()

int rpmDigestFinal ( DIGEST_CTX  ctx,
void **  datap,
size_t *  lenp,
int  asAscii 
)

Return digest and destroy context.

Final wrapup - pad to 64-byte boundary with the bit pattern 1 0* (64-bit count of bits processed, MSB-first)

Parameters
ctxdigest context
Return values
datapaddress of returned digest
lenpaddress of digest length
Parameters
asAsciireturn digest as ascii string?
Returns
0 on success

◆ rpmDigestInit()

DIGEST_CTX rpmDigestInit ( int  hashalgo,
rpmDigestFlags  flags 
)

Initialize digest.

Set bit count to 0 and buffer to mysterious initialization constants.

Parameters
hashalgotype of digest
flagsbit(s) to control digest operation
Returns
digest context

◆ rpmDigestLength()

size_t rpmDigestLength ( int  hashalgo)

Obtain digest length in bytes.

Parameters
hashalgotype of digest
Returns
digest length, zero on invalid algorithm

◆ rpmDigestUpdate()

int rpmDigestUpdate ( DIGEST_CTX  ctx,
const void *  data,
size_t  len 
)

Update context with next plain text buffer.

Parameters
ctxdigest context
datanext data buffer
lenno. bytes of data
Returns
0 on success

◆ rpmFreeCrypto()

int rpmFreeCrypto ( void  )

Shutdown cryptography.

◆ rpmInitCrypto()

int rpmInitCrypto ( void  )

Perform cryptography initialization.

It must be called before any cryptography can be used within rpm. It's not normally necessary to call it directly as it's called in general rpm initialization routines.

Returns
0 on success, -1 on failure