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stack warning fix, dont like to fiddle with mbedtls but all our tests works..

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iceman1001 2021-02-19 13:42:15 +01:00
commit 17bce5fb5a
1 changed files with 3 additions and 5 deletions
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8
common/mbedtls/ecdsa.c
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@ -289,20 +289,18 @@ cleanup:
int ecdsa_signature_to_asn1(const mbedtls_mpi *r, const mbedtls_mpi *s, int ecdsa_signature_to_asn1(const mbedtls_mpi *r, const mbedtls_mpi *s,
unsigned char *sig, size_t *slen) { unsigned char *sig, size_t *slen) {
int ret; int ret;
unsigned char buf[MBEDTLS_ECDSA_MAX_LEN]; unsigned char buf[MBEDTLS_ECDSA_MAX_LEN] = {0};
unsigned char *p = buf + sizeof(buf); unsigned char *p = buf + sizeof(buf) - 1;
size_t len = 0; size_t len = 0;
MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_mpi(&p, buf, s)); MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_mpi(&p, buf, s));
MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_mpi(&p, buf, r)); MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_mpi(&p, buf, r));
MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(&p, buf, len)); MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_len(&p, buf, len));
MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(&p, buf, MBEDTLS_ASN1_CHK_ADD(len, mbedtls_asn1_write_tag(&p, buf, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE));
MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_SEQUENCE));
memcpy(sig, p, len); memcpy(sig, p, len);
*slen = len; *slen = len;
return (0); return (0);
} }