diff options
Diffstat (limited to 'common/openpgp-oid.c')
| -rw-r--r-- | common/openpgp-oid.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/common/openpgp-oid.c b/common/openpgp-oid.c index ded7b0f7a..0189407f8 100644 --- a/common/openpgp-oid.c +++ b/common/openpgp-oid.c @@ -83,6 +83,10 @@ static const char oid_cv25519[] = */ static const char oid_cv448[] = { 0x03, 0x2b, 0x65, 0x6f }; +/* The OID for Ed448 in OpenPGP format. */ +static const char oid_ed448[] = { 0x03, 0x2b, 0x65, 0x71 }; + + /* A table to store keyalgo strings like "rsa2048 or "ed25519" so that * we do not need to allocate them. This is currently a simple array * but may eventually be changed to a fast data structure. Noet that @@ -346,6 +350,15 @@ openpgp_oidbuf_is_cv25519 (const void *buf, size_t len) } +/* Return true if (BUF,LEN) represents the OID for Ed448. */ +static int +openpgp_oidbuf_is_ed448 (const void *buf, size_t len) +{ + return (buf && len == DIM (oid_ed448) + && !memcmp (buf, oid_ed448, DIM (oid_ed448))); +} + + /* Return true if (BUF,LEN) represents the OID for X448. */ static int openpgp_oidbuf_is_cv448 (const void *buf, size_t len) @@ -370,6 +383,21 @@ openpgp_oid_is_cv25519 (gcry_mpi_t a) } +/* Return true if the MPI A represents the OID for Ed448. */ +int +openpgp_oid_is_ed448 (gcry_mpi_t a) +{ + const unsigned char *buf; + unsigned int nbits; + + if (!a || !gcry_mpi_get_flag (a, GCRYMPI_FLAG_OPAQUE)) + return 0; + + buf = gcry_mpi_get_opaque (a, &nbits); + return openpgp_oidbuf_is_ed448 (buf, (nbits+7)/8); +} + + /* Return true if the MPI A represents the OID for X448. */ int openpgp_oid_is_cv448 (gcry_mpi_t a) |