diff options
Diffstat (limited to 'crypto/ec/ec_print.c')
| -rw-r--r-- | crypto/ec/ec_print.c | 216 |
1 files changed, 100 insertions, 116 deletions
diff --git a/crypto/ec/ec_print.c b/crypto/ec/ec_print.c index f7c8a303ac..96b294d877 100644 --- a/crypto/ec/ec_print.c +++ b/crypto/ec/ec_print.c @@ -7,7 +7,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -56,140 +56,124 @@ #include <openssl/crypto.h> #include "ec_lcl.h" -BIGNUM *EC_POINT_point2bn(const EC_GROUP *group, - const EC_POINT *point, +BIGNUM *EC_POINT_point2bn(const EC_GROUP *group, + const EC_POINT *point, point_conversion_form_t form, - BIGNUM *ret, - BN_CTX *ctx) - { - size_t buf_len=0; - unsigned char *buf; + BIGNUM *ret, BN_CTX *ctx) +{ + size_t buf_len = 0; + unsigned char *buf; - buf_len = EC_POINT_point2oct(group, point, form, - NULL, 0, ctx); - if (buf_len == 0) - return NULL; + buf_len = EC_POINT_point2oct(group, point, form, NULL, 0, ctx); + if (buf_len == 0) + return NULL; - if ((buf = OPENSSL_malloc(buf_len)) == NULL) - return NULL; + if ((buf = OPENSSL_malloc(buf_len)) == NULL) + return NULL; - if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) - { - OPENSSL_free(buf); - return NULL; - } + if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) { + OPENSSL_free(buf); + return NULL; + } - ret = BN_bin2bn(buf, buf_len, ret); + ret = BN_bin2bn(buf, buf_len, ret); - OPENSSL_free(buf); + OPENSSL_free(buf); - return ret; + return ret; } EC_POINT *EC_POINT_bn2point(const EC_GROUP *group, - const BIGNUM *bn, - EC_POINT *point, - BN_CTX *ctx) - { - size_t buf_len=0; - unsigned char *buf; - EC_POINT *ret; - - if ((buf_len = BN_num_bytes(bn)) == 0) return NULL; - buf = OPENSSL_malloc(buf_len); - if (buf == NULL) - return NULL; - - if (!BN_bn2bin(bn, buf)) - { - OPENSSL_free(buf); - return NULL; - } - - if (point == NULL) - { - if ((ret = EC_POINT_new(group)) == NULL) - { - OPENSSL_free(buf); - return NULL; - } - } - else - ret = point; - - if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx)) - { - if (point == NULL) - EC_POINT_clear_free(ret); - OPENSSL_free(buf); - return NULL; - } - - OPENSSL_free(buf); - return ret; - } + const BIGNUM *bn, EC_POINT *point, BN_CTX *ctx) +{ + size_t buf_len = 0; + unsigned char *buf; + EC_POINT *ret; + + if ((buf_len = BN_num_bytes(bn)) == 0) + return NULL; + buf = OPENSSL_malloc(buf_len); + if (buf == NULL) + return NULL; + + if (!BN_bn2bin(bn, buf)) { + OPENSSL_free(buf); + return NULL; + } + + if (point == NULL) { + if ((ret = EC_POINT_new(group)) == NULL) { + OPENSSL_free(buf); + return NULL; + } + } else + ret = point; + + if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx)) { + if (point == NULL) + EC_POINT_clear_free(ret); + OPENSSL_free(buf); + return NULL; + } + + OPENSSL_free(buf); + return ret; +} static const char *HEX_DIGITS = "0123456789ABCDEF"; /* the return value must be freed (using OPENSSL_free()) */ char *EC_POINT_point2hex(const EC_GROUP *group, const EC_POINT *point, - point_conversion_form_t form, - BN_CTX *ctx) - { - char *ret, *p; - size_t buf_len=0,i; - unsigned char *buf, *pbuf; - - buf_len = EC_POINT_point2oct(group, point, form, - NULL, 0, ctx); - if (buf_len == 0) - return NULL; - - if ((buf = OPENSSL_malloc(buf_len)) == NULL) - return NULL; - - if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) - { - OPENSSL_free(buf); - return NULL; - } - - ret = (char *)OPENSSL_malloc(buf_len*2+2); - if (ret == NULL) - { - OPENSSL_free(buf); - return NULL; - } - p = ret; - pbuf = buf; - for (i=buf_len; i > 0; i--) - { - int v = (int) *(pbuf++); - *(p++)=HEX_DIGITS[v>>4]; - *(p++)=HEX_DIGITS[v&0x0F]; - } - *p='\0'; - - OPENSSL_free(buf); - - return ret; - } + point_conversion_form_t form, BN_CTX *ctx) +{ + char *ret, *p; + size_t buf_len = 0, i; + unsigned char *buf, *pbuf; + + buf_len = EC_POINT_point2oct(group, point, form, NULL, 0, ctx); + if (buf_len == 0) + return NULL; + + if ((buf = OPENSSL_malloc(buf_len)) == NULL) + return NULL; + + if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx)) { + OPENSSL_free(buf); + return NULL; + } + + ret = (char *)OPENSSL_malloc(buf_len * 2 + 2); + if (ret == NULL) { + OPENSSL_free(buf); + return NULL; + } + p = ret; + pbuf = buf; + for (i = buf_len; i > 0; i--) { + int v = (int)*(pbuf++); + *(p++) = HEX_DIGITS[v >> 4]; + *(p++) = HEX_DIGITS[v & 0x0F]; + } + *p = '\0'; + + OPENSSL_free(buf); + + return ret; +} EC_POINT *EC_POINT_hex2point(const EC_GROUP *group, - const char *buf, - EC_POINT *point, - BN_CTX *ctx) - { - EC_POINT *ret=NULL; - BIGNUM *tmp_bn=NULL; + const char *buf, EC_POINT *point, BN_CTX *ctx) +{ + EC_POINT *ret = NULL; + BIGNUM *tmp_bn = NULL; - if (!BN_hex2bn(&tmp_bn, buf)) - return NULL; + if (!BN_hex2bn(&tmp_bn, buf)) + return NULL; - ret = EC_POINT_bn2point(group, tmp_bn, point, ctx); + ret = EC_POINT_bn2point(group, tmp_bn, point, ctx); - BN_clear_free(tmp_bn); + BN_clear_free(tmp_bn); - return ret; - } + return ret; +} |