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Merge pull request #6168 from anhu/WOLFSSL_RELAXED_ASN_PARSING

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Relaxed parsing of explicit ECC public key
This commit is contained in:
Sean Parkinson
2023-03-08 08:20:04 +10:00
committed by GitHub
parent 9bc3b867e0 f1757b1bae
commit 842b22858b
1 changed files with 2 additions and 0 deletions
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wolfcrypt/src/asn.c
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@ -31143,11 +31143,13 @@ static int EccSpecifiedECDomainDecode(const byte* input, word32 inSz,
if ((ret == 0) && (version < 1 || version > 3)) { if ((ret == 0) && (version < 1 || version > 3)) {
ret = ASN_PARSE_E; ret = ASN_PARSE_E;
} }
#ifndef WOLFSSL_NO_ASN_STRICT
/* Only version 2 and above can have a seed. */ /* Only version 2 and above can have a seed. */
if ((ret == 0) && (dataASN[ECCSPECIFIEDASN_IDX_PARAM_SEED].tag != 0) && if ((ret == 0) && (dataASN[ECCSPECIFIEDASN_IDX_PARAM_SEED].tag != 0) &&
(version < 2)) { (version < 2)) {
ret = ASN_PARSE_E; ret = ASN_PARSE_E;
} }
#endif
/* Only version 2 and above can have a hash algorithm. */ /* Only version 2 and above can have a hash algorithm. */
if ((ret == 0) && (dataASN[ECCSPECIFIEDASN_IDX_HASH_SEQ].tag != 0) && if ((ret == 0) && (dataASN[ECCSPECIFIEDASN_IDX_HASH_SEQ].tag != 0) &&
(version < 2)) { (version < 2)) {