diff options
Diffstat (limited to 'g10/keyid.c')
| -rw-r--r-- | g10/keyid.c | 43 |
1 files changed, 37 insertions, 6 deletions
diff --git a/g10/keyid.c b/g10/keyid.c index 69d85da..7823f0d 100644 --- a/g10/keyid.c +++ b/g10/keyid.c @@ -88,7 +88,10 @@ pubkey_letter( int algo ) "256E" - ECDSA using a curve with 256 bit The macro PUBKEY_STRING_SIZE may be used to allocate a buffer with - a suitable size.*/ + a suitable size. Note that a more general version of this function + exists as get_keyalgo_string. However, that has no special + treatment for the old and unsupported Elgamal which we here print as + xxxNNNN. */ char * pubkey_string (PKT_public_key *pk, char *buffer, size_t bufsize) { @@ -323,11 +326,12 @@ keyid_copy (u32 *dest, const u32 *src) char * format_keyid (u32 *keyid, int format, char *buffer, int len) { - char tmp[KEYID_STR_SIZE]; if (! buffer) { - buffer = tmp; - len = sizeof (tmp); + len = KEYID_STR_SIZE; + buffer = xtrymalloc (len); + if (!buffer) + return NULL; } if (format == KF_DEFAULT) @@ -362,8 +366,6 @@ format_keyid (u32 *keyid, int format, char *buffer, int len) BUG(); } - if (buffer == tmp) - return xstrdup (buffer); return buffer; } @@ -709,6 +711,13 @@ usagestr_from_pk (PKT_public_key *pk, int fill) if ( (use & PUBKEY_USAGE_AUTH) ) buffer[i++] = 'A'; + if ( (use & PUBKEY_USAGE_RENC) ) + buffer[i++] = 'R'; + if ( (use & PUBKEY_USAGE_TIME) ) + buffer[i++] = 'T'; + if ( (use & PUBKEY_USAGE_GROUP) ) + buffer[i++] = 'G'; + while (fill && i < 4) buffer[i++] = ' '; @@ -985,3 +994,25 @@ hexkeygrip_from_pk (PKT_public_key *pk, char **r_grip) } return err; } + + +/* Return a hexfied malloced string of the ECDH parameters for an ECDH + * key from the public key PK. Returns NULL on error. */ +char * +ecdh_param_str_from_pk (PKT_public_key *pk) +{ + const unsigned char *s; + unsigned int n; + + if (!pk + || pk->pubkey_algo != PUBKEY_ALGO_ECDH + || !gcry_mpi_get_flag (pk->pkey[2], GCRYMPI_FLAG_OPAQUE) + || !(s = gcry_mpi_get_opaque (pk->pkey[2], &n)) || !n) + { + gpg_err_set_errno (EINVAL); + return NULL; /* Invalid parameter */ + } + + n = (n+7)/8; + return bin2hex (s, n, NULL); +} |