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Fix signature for secp521r1.

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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos 2023-01-17 00:05:46 +01:00
parent 0daddfd477
commit 9d47e62041
No known key found for this signature in database
GPG Key ID: C0095B7870A4CCD3
1 changed files with 3 additions and 3 deletions
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6
src/hsm/cvc.c
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@ -178,7 +178,7 @@ size_t asn1_cvc_cert(void *rsa_ecdsa, uint8_t key_type, uint8_t *buf, size_t buf
if (key_type == HSM_KEY_RSA) if (key_type == HSM_KEY_RSA)
key_size = mbedtls_mpi_size(&((mbedtls_rsa_context *)rsa_ecdsa)->N); key_size = mbedtls_mpi_size(&((mbedtls_rsa_context *)rsa_ecdsa)->N);
else if (key_type == HSM_KEY_EC) else if (key_type == HSM_KEY_EC)
key_size = 2*mbedtls_mpi_size(&((mbedtls_ecdsa_context *)rsa_ecdsa)->d); key_size = 2*(int)((mbedtls_ecp_curve_info_from_grp_id(((mbedtls_ecdsa_context *)rsa_ecdsa)->grp.id)->bit_size + 7)/8);
size_t body_size = asn1_cvc_cert_body(rsa_ecdsa, key_type, NULL, 0, ext, ext_len), sig_size = asn1_len_tag(0x5f37, key_size); size_t body_size = asn1_cvc_cert_body(rsa_ecdsa, key_type, NULL, 0, ext, ext_len), sig_size = asn1_len_tag(0x5f37, key_size);
size_t tot_len = asn1_len_tag(0x7f21, body_size+sig_size); size_t tot_len = asn1_len_tag(0x7f21, body_size+sig_size);
if (buf_len == 0 || buf == NULL) if (buf_len == 0 || buf == NULL)
@ -207,8 +207,8 @@ size_t asn1_cvc_cert(void *rsa_ecdsa, uint8_t key_type, uint8_t *buf, size_t buf
mbedtls_mpi_init(&s); mbedtls_mpi_init(&s);
ret = mbedtls_ecdsa_sign(&ecdsa->grp, &r, &s, &ecdsa->d, hsh, sizeof(hsh), random_gen, NULL); ret = mbedtls_ecdsa_sign(&ecdsa->grp, &r, &s, &ecdsa->d, hsh, sizeof(hsh), random_gen, NULL);
if (ret == 0) { if (ret == 0) {
mbedtls_mpi_write_binary(&r, p, mbedtls_mpi_size(&r)); p += mbedtls_mpi_size(&r); mbedtls_mpi_write_binary(&r, p, key_size/2); p += key_size/2;
mbedtls_mpi_write_binary(&s, p, mbedtls_mpi_size(&s)); p += mbedtls_mpi_size(&s); mbedtls_mpi_write_binary(&s, p, key_size/2); p += key_size/2;
} }
else { else {
memset(p, 0, key_size); memset(p, 0, key_size);