- {
- int ok=0;
- EC_KEY *ret=NULL;
- EC_PRIVATEKEY *priv_key=NULL;
-
- if ((priv_key = EC_PRIVATEKEY_new()) == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- if ((priv_key = d2i_EC_PRIVATEKEY(&priv_key, in, len)) == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- EC_PRIVATEKEY_free(priv_key);
- return NULL;
- }
-
- if (a == NULL || *a == NULL)
- {
- if ((ret = EC_KEY_new()) == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
- if (a)
- *a = ret;
- }
- else
- ret = *a;
-
- if (priv_key->parameters)
- {
- if (ret->group)
- EC_GROUP_clear_free(ret->group);
- ret->group = ec_asn1_pkparameters2group(priv_key->parameters);
- }
-
- if (ret->group == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
-
- ret->version = priv_key->version;
-
- if (priv_key->privateKey)
- {
- ret->priv_key = BN_bin2bn(
- M_ASN1_STRING_data(priv_key->privateKey),
- M_ASN1_STRING_length(priv_key->privateKey),
- ret->priv_key);
- if (ret->priv_key == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY,
- ERR_R_BN_LIB);
- goto err;
- }
- }
- else
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY,
- EC_R_MISSING_PRIVATE_KEY);
- goto err;
- }
-
- if (priv_key->publicKey)
- {
- const unsigned char *pub_oct;
- size_t pub_oct_len;
-
- if (ret->pub_key)
- EC_POINT_clear_free(ret->pub_key);
- ret->pub_key = EC_POINT_new(ret->group);
- if (ret->pub_key == NULL)
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- pub_oct = M_ASN1_STRING_data(priv_key->publicKey);
- pub_oct_len = M_ASN1_STRING_length(priv_key->publicKey);
- /* save the point conversion form */
- ret->conv_form = (point_conversion_form_t)(pub_oct[0] & ~0x01);
- if (!EC_POINT_oct2point(ret->group, ret->pub_key,
- pub_oct, pub_oct_len, NULL))
- {
- ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- }
-
- ok = 1;
-err:
- if (!ok)
- {
- if (ret)
- EC_KEY_free(ret);
- ret = NULL;
- }
-
- if (priv_key)
- EC_PRIVATEKEY_free(priv_key);
-
- return(ret);
- }
-
-int i2d_ECPrivateKey(EC_KEY *a, unsigned char **out)
- {
- int ret=0, ok=0;
- unsigned char *buffer=NULL;
- size_t buf_len=0, tmp_len;
- EC_PRIVATEKEY *priv_key=NULL;
-
- if (a == NULL || a->group == NULL || a->priv_key == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_PASSED_NULL_PARAMETER);
- goto err;
- }
-
- if ((priv_key = EC_PRIVATEKEY_new()) == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- priv_key->version = a->version;
-
- buf_len = (size_t)BN_num_bytes(a->priv_key);
- buffer = OPENSSL_malloc(buf_len);
- if (buffer == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (!BN_bn2bin(a->priv_key, buffer))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_BN_LIB);
- goto err;
- }
-
- if (!M_ASN1_OCTET_STRING_set(priv_key->privateKey, buffer, buf_len))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB);
- goto err;
- }
-
- if (!(a->enc_flag & EC_PKEY_NO_PARAMETERS))
- {
- if ((priv_key->parameters = ec_asn1_group2pkparameters(
- a->group, priv_key->parameters)) == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- }
-
- if (!(a->enc_flag & EC_PKEY_NO_PUBKEY))
- {
- priv_key->publicKey = M_ASN1_BIT_STRING_new();
- if (priv_key->publicKey == NULL)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY,
- ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- tmp_len = EC_POINT_point2oct(a->group, a->pub_key,
- a->conv_form, NULL, 0, NULL);
-
- if (tmp_len > buf_len)
- {
- unsigned char *tmp_buffer = OPENSSL_realloc(buffer, tmp_len);
- if (!tmp_buffer)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- buffer = tmp_buffer;
- buf_len = tmp_len;
- }
-
- if (!EC_POINT_point2oct(a->group, a->pub_key,
- a->conv_form, buffer, buf_len, NULL))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
-
- priv_key->publicKey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07);
- priv_key->publicKey->flags |= ASN1_STRING_FLAG_BITS_LEFT;
- if (!M_ASN1_BIT_STRING_set(priv_key->publicKey, buffer,
- buf_len))
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB);
- goto err;
- }
- }
-
- if ((ret = i2d_EC_PRIVATEKEY(priv_key, out)) == 0)
- {
- ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
- goto err;
- }
- ok=1;
-err:
- if (buffer)
- OPENSSL_free(buffer);
- if (priv_key)
- EC_PRIVATEKEY_free(priv_key);
- return(ok?ret:0);
- }
+{
+ EC_KEY *ret = NULL;
+ EC_PRIVATEKEY *priv_key = NULL;
+ const unsigned char *p = *in;
+
+ if ((priv_key = d2i_EC_PRIVATEKEY(NULL, &p, len)) == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ return NULL;
+ }
+
+ if (a == NULL || *a == NULL) {
+ if ((ret = EC_KEY_new()) == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ } else
+ ret = *a;
+
+ if (priv_key->parameters) {
+ EC_GROUP_clear_free(ret->group);
+ ret->group = ec_asn1_pkparameters2group(priv_key->parameters);
+ }
+
+ if (ret->group == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ ret->version = priv_key->version;
+
+ if (priv_key->privateKey) {
+ ASN1_OCTET_STRING *pkey = priv_key->privateKey;
+ if (EC_KEY_oct2priv(ret, ASN1_STRING_data(pkey),
+ ASN1_STRING_length(pkey)) == 0)
+ goto err;
+ } else {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, EC_R_MISSING_PRIVATE_KEY);
+ goto err;
+ }
+
+ EC_POINT_clear_free(ret->pub_key);
+ ret->pub_key = EC_POINT_new(ret->group);
+ if (ret->pub_key == NULL) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ if (priv_key->publicKey) {
+ const unsigned char *pub_oct;
+ int pub_oct_len;
+
+ pub_oct = ASN1_STRING_data(priv_key->publicKey);
+ pub_oct_len = ASN1_STRING_length(priv_key->publicKey);
+ /*
+ * The first byte - point conversion form - must be present.
+ */
+ if (pub_oct_len <= 0) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, EC_R_BUFFER_TOO_SMALL);
+ goto err;
+ }
+ /* Save the point conversion form. */
+ ret->conv_form = (point_conversion_form_t) (pub_oct[0] & ~0x01);
+ if (!EC_POINT_oct2point(ret->group, ret->pub_key,
+ pub_oct, (size_t)(pub_oct_len), NULL)) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ } else {
+ if (!EC_POINT_mul
+ (ret->group, ret->pub_key, ret->priv_key, NULL, NULL, NULL)) {
+ ECerr(EC_F_D2I_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ /* Remember the original private-key-only encoding. */
+ ret->enc_flag |= EC_PKEY_NO_PUBKEY;
+ }
+
+ if (a)
+ *a = ret;
+ EC_PRIVATEKEY_free(priv_key);
+ *in = p;
+ return (ret);
+
+ err:
+ if (a == NULL || *a != ret)
+ EC_KEY_free(ret);
+ EC_PRIVATEKEY_free(priv_key);
+ return NULL;
+}
+
+int i2d_ECPrivateKey(EC_KEY *a, unsigned char **out)
+{
+ int ret = 0, ok = 0;
+ unsigned char *buffer = NULL;
+ size_t buf_len = 0, tmp_len;
+ EC_PRIVATEKEY *priv_key = NULL;
+
+ if (a == NULL || a->group == NULL ||
+ (!(a->enc_flag & EC_PKEY_NO_PUBKEY) && a->pub_key == NULL)) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_PASSED_NULL_PARAMETER);
+ goto err;
+ }
+
+ if ((priv_key = EC_PRIVATEKEY_new()) == NULL) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ priv_key->version = a->version;
+
+ buf_len = EC_KEY_priv2oct(a, NULL, 0);
+
+ if (buf_len == 0) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ buffer = OPENSSL_malloc(buf_len);
+ if (buffer == NULL) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ if (EC_KEY_priv2oct(a, buffer, buf_len) == 0) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ if (!ASN1_OCTET_STRING_set(priv_key->privateKey, buffer, buf_len)) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB);
+ goto err;
+ }
+
+ if (!(a->enc_flag & EC_PKEY_NO_PARAMETERS)) {
+ if ((priv_key->parameters =
+ ec_asn1_group2pkparameters(a->group,
+ priv_key->parameters)) == NULL) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
+
+ if (!(a->enc_flag & EC_PKEY_NO_PUBKEY)) {
+ priv_key->publicKey = ASN1_BIT_STRING_new();
+ if (priv_key->publicKey == NULL) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ tmp_len = EC_POINT_point2oct(a->group, a->pub_key,
+ a->conv_form, NULL, 0, NULL);
+
+ if (tmp_len > buf_len) {
+ unsigned char *tmp_buffer = OPENSSL_realloc(buffer, tmp_len);
+ if (!tmp_buffer) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ buffer = tmp_buffer;
+ buf_len = tmp_len;
+ }
+
+ if (!EC_POINT_point2oct(a->group, a->pub_key,
+ a->conv_form, buffer, buf_len, NULL)) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ priv_key->publicKey->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
+ priv_key->publicKey->flags |= ASN1_STRING_FLAG_BITS_LEFT;
+ if (!ASN1_BIT_STRING_set(priv_key->publicKey, buffer, buf_len)) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_ASN1_LIB);
+ goto err;
+ }
+ }
+
+ if ((ret = i2d_EC_PRIVATEKEY(priv_key, out)) == 0) {
+ ECerr(EC_F_I2D_ECPRIVATEKEY, ERR_R_EC_LIB);
+ goto err;
+ }
+ ok = 1;
+ err:
+ OPENSSL_free(buffer);
+ EC_PRIVATEKEY_free(priv_key);
+ return (ok ? ret : 0);
+}