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add some cose key checks

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merlokk 2018-11-26 19:49:41 +02:00
parent 065773377d
commit d36bfd5829
1 changed files with 10 additions and 0 deletions
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10
client/fido/cose.c
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@ -171,6 +171,8 @@ int COSEGetECDSAKey(uint8_t *data, size_t datalen, bool verbose, uint8_t *public
cbor_value_get_int64(&map, &i64);
if(verbose)
PrintAndLog("kty [%lld] %s", (long long)i64, GetCOSEktyDescription(i64));
if (i64 != 2)
PrintAndLog("ERROR: kty must be 2.");
}
// algorithm
@ -179,6 +181,8 @@ int COSEGetECDSAKey(uint8_t *data, size_t datalen, bool verbose, uint8_t *public
cbor_value_get_int64(&map, &i64);
if(verbose)
PrintAndLog("algorithm [%lld] %s", (long long)i64, GetCOSEAlgDescription(i64));
if (i64 != -7)
PrintAndLog("ERROR: algorithm must be -7.");
}
// curve
@ -187,6 +191,8 @@ int COSEGetECDSAKey(uint8_t *data, size_t datalen, bool verbose, uint8_t *public
cbor_value_get_int64(&map, &i64);
if(verbose)
PrintAndLog("curve [%lld] %s", (long long)i64, GetCOSECurveDescription(i64));
if (i64 != 1)
PrintAndLog("ERROR: curve must be 1.");
}
// plain key
@ -199,6 +205,8 @@ int COSEGetECDSAKey(uint8_t *data, size_t datalen, bool verbose, uint8_t *public
cbor_check(res);
if(verbose)
PrintAndLog("x - coordinate [%d]: %s", len, sprint_hex(&public_key[1], 32));
if (len != 32)
PrintAndLog("ERROR: x - coordinate length must be 32.");
}
// y - coordinate
@ -208,6 +216,8 @@ int COSEGetECDSAKey(uint8_t *data, size_t datalen, bool verbose, uint8_t *public
cbor_check(res);
if(verbose)
PrintAndLog("y - coordinate [%d]: %s", len, sprint_hex(&public_key[33], 32));
if (len != 32)
PrintAndLog("ERROR: y - coordinate length must be 32.");
}
// d - private key