diff options
| -rw-r--r-- | src/common/crypto_ed25519.c | 8 | ||||
| -rw-r--r-- | src/common/crypto_ed25519.h | 3 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/common/crypto_ed25519.c b/src/common/crypto_ed25519.c index 30ed772274..809ad12478 100644 --- a/src/common/crypto_ed25519.c +++ b/src/common/crypto_ed25519.c @@ -211,6 +211,14 @@ ed25519_keypair_generate(ed25519_keypair_t *keypair_out, int extra_strong) return 0; } +/** Return true iff 'pubkey' is set to zero (eg to indicate that it is not + * set). */ +int +ed25519_public_key_is_zero(const ed25519_public_key_t *pubkey) +{ + return tor_mem_is_zero((char*)pubkey->pubkey, ED25519_PUBKEY_LEN); +} + /* Return a heap-allocated array that contains <b>msg</b> prefixed by the * string <b>prefix_str</b>. Set <b>final_msg_len_out</b> to the size of the * final array. If an error occured, return NULL. It's the resonsibility of the diff --git a/src/common/crypto_ed25519.h b/src/common/crypto_ed25519.h index 31afc49ccc..5d63d90d13 100644 --- a/src/common/crypto_ed25519.h +++ b/src/common/crypto_ed25519.h @@ -66,6 +66,9 @@ ed25519_checksig_prefixed(const ed25519_signature_t *signature, const char *prefix_str, const ed25519_public_key_t *pubkey); +int ed25519_public_key_is_zero(const ed25519_public_key_t *pubkey); + + /** * A collection of information necessary to check an Ed25519 signature. Used * for batch verification. |