crypto/ecdsa/ecdsatest.c

293     unsigned char *raw_buf = NULL;
428         /* Store the two BIGNUMs in raw_buf. */
437         if ((raw_buf = OPENSSL_malloc(buf_len)) == NULL)
440         memset(raw_buf, 0, buf_len);
441         BN_bn2bin(ecdsa_sig->r, raw_buf + bn_len - r_len);
442         BN_bn2bin(ecdsa_sig->s, raw_buf + buf_len - s_len);
445         offset = raw_buf[10] % buf_len;
446         dirt = raw_buf[11] ? raw_buf[11] : 1;
447         raw_buf[offset] ^= dirt;
448         /* Now read the BIGNUMs back in from raw_buf. */
449         if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
450             (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
462         raw_buf[offset] ^= dirt;
463         if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
464             (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
488         OPENSSL_free(raw_buf);
489         raw_buf = NULL;
502     if (raw_buf)
503         OPENSSL_free(raw_buf);