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rsa: handle buffer length similarly in private and public key parsing

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Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
This commit is contained in:
Valerio Setti
2024-02-06 08:00:18 +01:00
parent 45c33ed41e
commit fe329cea3f
3 changed files with 9 additions and 3 deletions
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8
library/rsa.c
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@ -109,6 +109,10 @@ int mbedtls_rsa_parse_key(mbedtls_rsa_context *rsa, const unsigned char *key, si
end = p + len;
if (end > (key + keylen)) {
return MBEDTLS_ERR_ASN1_LENGTH_MISMATCH;
}
if ((ret = mbedtls_asn1_get_int(&p, end, &version)) != 0) {
return ret;
}
@ -239,7 +243,9 @@ int mbedtls_rsa_parse_pubkey(mbedtls_rsa_context *rsa, const unsigned char *key,
return ret;
}
if (p + len != end) {
end = p + len;
if (end > (key + keylen)) {
return MBEDTLS_ERR_ASN1_LENGTH_MISMATCH;
}