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On error path, do not set the signature len if a NULL pointer was given.

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This commit is contained in:
Frank Denis 2014-08-15 15:10:24 -07:00
parent 6c8df6adad
commit d01e1f4875
1 changed files with 3 additions and 1 deletions
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4
src/libsodium/crypto_sign/ed25519/ref10/sign.c
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@ -63,7 +63,9 @@ crypto_sign(unsigned char *sm, unsigned long long *smlen,
if (crypto_sign_detached(sm, &siglen, m, mlen, sk) != 0 ||
siglen > crypto_sign_ed25519_BYTES) {
*smlen = 0;
if (smlen != NULL) {
*smlen = 0;
}
memset(sm, 0, mlen + crypto_sign_ed25519_BYTES);
return -1;
}