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authorB Stack <bgstack15@gmail.com>2019-07-15 23:54:24 -0400
committerB Stack <bgstack15@gmail.com>2019-07-15 23:54:24 -0400
commit91fad0b6c330c35129b069fab8bdf5c4ba479ddf (patch)
tree46587604ba44237161655b5b0aa946bf5ebf515d /openssl-freefilesync/ec_curve.c
parentfreefilesync 10.14 rpm rc1 (diff)
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add openssl-freefilesync
Diffstat (limited to 'openssl-freefilesync/ec_curve.c')
-rw-r--r--openssl-freefilesync/ec_curve.c470
1 files changed, 470 insertions, 0 deletions
diff --git a/openssl-freefilesync/ec_curve.c b/openssl-freefilesync/ec_curve.c
new file mode 100644
index 0000000..58f8f3f
--- /dev/null
+++ b/openssl-freefilesync/ec_curve.c
@@ -0,0 +1,470 @@
+/*
+ * Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
+ *
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <string.h>
+#include "ec_lcl.h"
+#include <openssl/err.h>
+#include <openssl/obj_mac.h>
+#include <openssl/opensslconf.h>
+#include "internal/nelem.h"
+
+typedef struct {
+ int field_type, /* either NID_X9_62_prime_field or
+ * NID_X9_62_characteristic_two_field */
+ seed_len, param_len;
+ unsigned int cofactor; /* promoted to BN_ULONG */
+} EC_CURVE_DATA;
+
+/* the nist prime curves */
+static const struct {
+ EC_CURVE_DATA h;
+ unsigned char data[20 + 28 * 6];
+} _EC_NIST_PRIME_224 = {
+ {
+ NID_X9_62_prime_field, 20, 28, 1
+ },
+ {
+ /* seed */
+ 0xBD, 0x71, 0x34, 0x47, 0x99, 0xD5, 0xC7, 0xFC, 0xDC, 0x45, 0xB5, 0x9F,
+ 0xA3, 0xB9, 0xAB, 0x8F, 0x6A, 0x94, 0x8B, 0xC5,
+ /* p */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x01,
+ /* a */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFE,
+ /* b */
+ 0xB4, 0x05, 0x0A, 0x85, 0x0C, 0x04, 0xB3, 0xAB, 0xF5, 0x41, 0x32, 0x56,
+ 0x50, 0x44, 0xB0, 0xB7, 0xD7, 0xBF, 0xD8, 0xBA, 0x27, 0x0B, 0x39, 0x43,
+ 0x23, 0x55, 0xFF, 0xB4,
+ /* x */
+ 0xB7, 0x0E, 0x0C, 0xBD, 0x6B, 0xB4, 0xBF, 0x7F, 0x32, 0x13, 0x90, 0xB9,
+ 0x4A, 0x03, 0xC1, 0xD3, 0x56, 0xC2, 0x11, 0x22, 0x34, 0x32, 0x80, 0xD6,
+ 0x11, 0x5C, 0x1D, 0x21,
+ /* y */
+ 0xbd, 0x37, 0x63, 0x88, 0xb5, 0xf7, 0x23, 0xfb, 0x4c, 0x22, 0xdf, 0xe6,
+ 0xcd, 0x43, 0x75, 0xa0, 0x5a, 0x07, 0x47, 0x64, 0x44, 0xd5, 0x81, 0x99,
+ 0x85, 0x00, 0x7e, 0x34,
+ /* order */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0x16, 0xA2, 0xE0, 0xB8, 0xF0, 0x3E, 0x13, 0xDD, 0x29, 0x45,
+ 0x5C, 0x5C, 0x2A, 0x3D
+ }
+};
+
+static const struct {
+ EC_CURVE_DATA h;
+ unsigned char data[20 + 48 * 6];
+} _EC_NIST_PRIME_384 = {
+ {
+ NID_X9_62_prime_field, 20, 48, 1
+ },
+ {
+ /* seed */
+ 0xA3, 0x35, 0x92, 0x6A, 0xA3, 0x19, 0xA2, 0x7A, 0x1D, 0x00, 0x89, 0x6A,
+ 0x67, 0x73, 0xA4, 0x82, 0x7A, 0xCD, 0xAC, 0x73,
+ /* p */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+ /* a */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFC,
+ /* b */
+ 0xB3, 0x31, 0x2F, 0xA7, 0xE2, 0x3E, 0xE7, 0xE4, 0x98, 0x8E, 0x05, 0x6B,
+ 0xE3, 0xF8, 0x2D, 0x19, 0x18, 0x1D, 0x9C, 0x6E, 0xFE, 0x81, 0x41, 0x12,
+ 0x03, 0x14, 0x08, 0x8F, 0x50, 0x13, 0x87, 0x5A, 0xC6, 0x56, 0x39, 0x8D,
+ 0x8A, 0x2E, 0xD1, 0x9D, 0x2A, 0x85, 0xC8, 0xED, 0xD3, 0xEC, 0x2A, 0xEF,
+ /* x */
+ 0xAA, 0x87, 0xCA, 0x22, 0xBE, 0x8B, 0x05, 0x37, 0x8E, 0xB1, 0xC7, 0x1E,
+ 0xF3, 0x20, 0xAD, 0x74, 0x6E, 0x1D, 0x3B, 0x62, 0x8B, 0xA7, 0x9B, 0x98,
+ 0x59, 0xF7, 0x41, 0xE0, 0x82, 0x54, 0x2A, 0x38, 0x55, 0x02, 0xF2, 0x5D,
+ 0xBF, 0x55, 0x29, 0x6C, 0x3A, 0x54, 0x5E, 0x38, 0x72, 0x76, 0x0A, 0xB7,
+ /* y */
+ 0x36, 0x17, 0xde, 0x4a, 0x96, 0x26, 0x2c, 0x6f, 0x5d, 0x9e, 0x98, 0xbf,
+ 0x92, 0x92, 0xdc, 0x29, 0xf8, 0xf4, 0x1d, 0xbd, 0x28, 0x9a, 0x14, 0x7c,
+ 0xe9, 0xda, 0x31, 0x13, 0xb5, 0xf0, 0xb8, 0xc0, 0x0a, 0x60, 0xb1, 0xce,
+ 0x1d, 0x7e, 0x81, 0x9d, 0x7a, 0x43, 0x1d, 0x7c, 0x90, 0xea, 0x0e, 0x5f,
+ /* order */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xC7, 0x63, 0x4D, 0x81, 0xF4, 0x37, 0x2D, 0xDF, 0x58, 0x1A, 0x0D, 0xB2,
+ 0x48, 0xB0, 0xA7, 0x7A, 0xEC, 0xEC, 0x19, 0x6A, 0xCC, 0xC5, 0x29, 0x73
+ }
+};
+
+static const struct {
+ EC_CURVE_DATA h;
+ unsigned char data[20 + 66 * 6];
+} _EC_NIST_PRIME_521 = {
+ {
+ NID_X9_62_prime_field, 20, 66, 1
+ },
+ {
+ /* seed */
+ 0xD0, 0x9E, 0x88, 0x00, 0x29, 0x1C, 0xB8, 0x53, 0x96, 0xCC, 0x67, 0x17,
+ 0x39, 0x32, 0x84, 0xAA, 0xA0, 0xDA, 0x64, 0xBA,
+ /* p */
+ 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ /* a */
+ 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC,
+ /* b */
+ 0x00, 0x51, 0x95, 0x3E, 0xB9, 0x61, 0x8E, 0x1C, 0x9A, 0x1F, 0x92, 0x9A,
+ 0x21, 0xA0, 0xB6, 0x85, 0x40, 0xEE, 0xA2, 0xDA, 0x72, 0x5B, 0x99, 0xB3,
+ 0x15, 0xF3, 0xB8, 0xB4, 0x89, 0x91, 0x8E, 0xF1, 0x09, 0xE1, 0x56, 0x19,
+ 0x39, 0x51, 0xEC, 0x7E, 0x93, 0x7B, 0x16, 0x52, 0xC0, 0xBD, 0x3B, 0xB1,
+ 0xBF, 0x07, 0x35, 0x73, 0xDF, 0x88, 0x3D, 0x2C, 0x34, 0xF1, 0xEF, 0x45,
+ 0x1F, 0xD4, 0x6B, 0x50, 0x3F, 0x00,
+ /* x */
+ 0x00, 0xC6, 0x85, 0x8E, 0x06, 0xB7, 0x04, 0x04, 0xE9, 0xCD, 0x9E, 0x3E,
+ 0xCB, 0x66, 0x23, 0x95, 0xB4, 0x42, 0x9C, 0x64, 0x81, 0x39, 0x05, 0x3F,
+ 0xB5, 0x21, 0xF8, 0x28, 0xAF, 0x60, 0x6B, 0x4D, 0x3D, 0xBA, 0xA1, 0x4B,
+ 0x5E, 0x77, 0xEF, 0xE7, 0x59, 0x28, 0xFE, 0x1D, 0xC1, 0x27, 0xA2, 0xFF,
+ 0xA8, 0xDE, 0x33, 0x48, 0xB3, 0xC1, 0x85, 0x6A, 0x42, 0x9B, 0xF9, 0x7E,
+ 0x7E, 0x31, 0xC2, 0xE5, 0xBD, 0x66,
+ /* y */
+ 0x01, 0x18, 0x39, 0x29, 0x6a, 0x78, 0x9a, 0x3b, 0xc0, 0x04, 0x5c, 0x8a,
+ 0x5f, 0xb4, 0x2c, 0x7d, 0x1b, 0xd9, 0x98, 0xf5, 0x44, 0x49, 0x57, 0x9b,
+ 0x44, 0x68, 0x17, 0xaf, 0xbd, 0x17, 0x27, 0x3e, 0x66, 0x2c, 0x97, 0xee,
+ 0x72, 0x99, 0x5e, 0xf4, 0x26, 0x40, 0xc5, 0x50, 0xb9, 0x01, 0x3f, 0xad,
+ 0x07, 0x61, 0x35, 0x3c, 0x70, 0x86, 0xa2, 0x72, 0xc2, 0x40, 0x88, 0xbe,
+ 0x94, 0x76, 0x9f, 0xd1, 0x66, 0x50,
+ /* order */
+ 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFA, 0x51, 0x86,
+ 0x87, 0x83, 0xBF, 0x2F, 0x96, 0x6B, 0x7F, 0xCC, 0x01, 0x48, 0xF7, 0x09,
+ 0xA5, 0xD0, 0x3B, 0xB5, 0xC9, 0xB8, 0x89, 0x9C, 0x47, 0xAE, 0xBB, 0x6F,
+ 0xB7, 0x1E, 0x91, 0x38, 0x64, 0x09
+ }
+};
+
+static const struct {
+ EC_CURVE_DATA h;
+ unsigned char data[20 + 32 * 6];
+} _EC_X9_62_PRIME_256V1 = {
+ {
+ NID_X9_62_prime_field, 20, 32, 1
+ },
+ {
+ /* seed */
+ 0xC4, 0x9D, 0x36, 0x08, 0x86, 0xE7, 0x04, 0x93, 0x6A, 0x66, 0x78, 0xE1,
+ 0x13, 0x9D, 0x26, 0xB7, 0x81, 0x9F, 0x7E, 0x90,
+ /* p */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ /* a */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC,
+ /* b */
+ 0x5A, 0xC6, 0x35, 0xD8, 0xAA, 0x3A, 0x93, 0xE7, 0xB3, 0xEB, 0xBD, 0x55,
+ 0x76, 0x98, 0x86, 0xBC, 0x65, 0x1D, 0x06, 0xB0, 0xCC, 0x53, 0xB0, 0xF6,
+ 0x3B, 0xCE, 0x3C, 0x3E, 0x27, 0xD2, 0x60, 0x4B,
+ /* x */
+ 0x6B, 0x17, 0xD1, 0xF2, 0xE1, 0x2C, 0x42, 0x47, 0xF8, 0xBC, 0xE6, 0xE5,
+ 0x63, 0xA4, 0x40, 0xF2, 0x77, 0x03, 0x7D, 0x81, 0x2D, 0xEB, 0x33, 0xA0,
+ 0xF4, 0xA1, 0x39, 0x45, 0xD8, 0x98, 0xC2, 0x96,
+ /* y */
+ 0x4f, 0xe3, 0x42, 0xe2, 0xfe, 0x1a, 0x7f, 0x9b, 0x8e, 0xe7, 0xeb, 0x4a,
+ 0x7c, 0x0f, 0x9e, 0x16, 0x2b, 0xce, 0x33, 0x57, 0x6b, 0x31, 0x5e, 0xce,
+ 0xcb, 0xb6, 0x40, 0x68, 0x37, 0xbf, 0x51, 0xf5,
+ /* order */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xBC, 0xE6, 0xFA, 0xAD, 0xA7, 0x17, 0x9E, 0x84,
+ 0xF3, 0xB9, 0xCA, 0xC2, 0xFC, 0x63, 0x25, 0x51
+ }
+};
+
+static const struct {
+ EC_CURVE_DATA h;
+ unsigned char data[0 + 32 * 6];
+} _EC_SECG_PRIME_256K1 = {
+ {
+ NID_X9_62_prime_field, 0, 32, 1
+ },
+ {
+ /* no seed */
+ /* p */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFE, 0xFF, 0xFF, 0xFC, 0x2F,
+ /* a */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ /* b */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07,
+ /* x */
+ 0x79, 0xBE, 0x66, 0x7E, 0xF9, 0xDC, 0xBB, 0xAC, 0x55, 0xA0, 0x62, 0x95,
+ 0xCE, 0x87, 0x0B, 0x07, 0x02, 0x9B, 0xFC, 0xDB, 0x2D, 0xCE, 0x28, 0xD9,
+ 0x59, 0xF2, 0x81, 0x5B, 0x16, 0xF8, 0x17, 0x98,
+ /* y */
+ 0x48, 0x3a, 0xda, 0x77, 0x26, 0xa3, 0xc4, 0x65, 0x5d, 0xa4, 0xfb, 0xfc,
+ 0x0e, 0x11, 0x08, 0xa8, 0xfd, 0x17, 0xb4, 0x48, 0xa6, 0x85, 0x54, 0x19,
+ 0x9c, 0x47, 0xd0, 0x8f, 0xfb, 0x10, 0xd4, 0xb8,
+ /* order */
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFE, 0xBA, 0xAE, 0xDC, 0xE6, 0xAF, 0x48, 0xA0, 0x3B,
+ 0xBF, 0xD2, 0x5E, 0x8C, 0xD0, 0x36, 0x41, 0x41
+ }
+};
+
+typedef struct _ec_list_element_st {
+ int nid;
+ const EC_CURVE_DATA *data;
+ const EC_METHOD *(*meth) (void);
+ const char *comment;
+} ec_list_element;
+
+static const ec_list_element curve_list[] = {
+ /* prime field curves */
+ /* secg curves */
+#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+ {NID_secp224r1, &_EC_NIST_PRIME_224.h, EC_GFp_nistp224_method,
+ "NIST/SECG curve over a 224 bit prime field"},
+#else
+ {NID_secp224r1, &_EC_NIST_PRIME_224.h, 0,
+ "NIST/SECG curve over a 224 bit prime field"},
+#endif
+ {NID_secp256k1, &_EC_SECG_PRIME_256K1.h, 0,
+ "SECG curve over a 256 bit prime field"},
+ /* SECG secp256r1 is the same as X9.62 prime256v1 and hence omitted */
+ {NID_secp384r1, &_EC_NIST_PRIME_384.h, 0,
+ "NIST/SECG curve over a 384 bit prime field"},
+#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+ {NID_secp521r1, &_EC_NIST_PRIME_521.h, EC_GFp_nistp521_method,
+ "NIST/SECG curve over a 521 bit prime field"},
+#else
+ {NID_secp521r1, &_EC_NIST_PRIME_521.h, 0,
+ "NIST/SECG curve over a 521 bit prime field"},
+#endif
+ /* X9.62 curves */
+ {NID_X9_62_prime256v1, &_EC_X9_62_PRIME_256V1.h,
+#if defined(ECP_NISTZ256_ASM)
+ EC_GFp_nistz256_method,
+#elif !defined(OPENSSL_NO_EC_NISTP_64_GCC_128)
+ EC_GFp_nistp256_method,
+#else
+ 0,
+#endif
+ "X9.62/SECG curve over a 256 bit prime field"},
+};
+
+#define curve_list_length OSSL_NELEM(curve_list)
+
+static EC_GROUP *ec_group_new_from_data(const ec_list_element curve)
+{
+ EC_GROUP *group = NULL;
+ EC_POINT *P = NULL;
+ BN_CTX *ctx = NULL;
+ BIGNUM *p = NULL, *a = NULL, *b = NULL, *x = NULL, *y = NULL, *order =
+ NULL;
+ int ok = 0;
+ int seed_len, param_len;
+ const EC_METHOD *meth;
+ const EC_CURVE_DATA *data;
+ const unsigned char *params;
+
+ /* If no curve data curve method must handle everything */
+ if (curve.data == NULL)
+ return EC_GROUP_new(curve.meth != NULL ? curve.meth() : NULL);
+
+ if ((ctx = BN_CTX_new()) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ data = curve.data;
+ seed_len = data->seed_len;
+ param_len = data->param_len;
+ params = (const unsigned char *)(data + 1); /* skip header */
+ params += seed_len; /* skip seed */
+
+ if ((p = BN_bin2bn(params + 0 * param_len, param_len, NULL)) == NULL
+ || (a = BN_bin2bn(params + 1 * param_len, param_len, NULL)) == NULL
+ || (b = BN_bin2bn(params + 2 * param_len, param_len, NULL)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_BN_LIB);
+ goto err;
+ }
+
+ if (curve.meth != 0) {
+ meth = curve.meth();
+ if (((group = EC_GROUP_new(meth)) == NULL) ||
+ (!(group->meth->group_set_curve(group, p, a, b, ctx)))) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_EC_LIB);
+ goto err;
+ }
+ } else if (data->field_type == NID_X9_62_prime_field) {
+ if ((group = EC_GROUP_new_curve_GFp(p, a, b, ctx)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
+#ifndef OPENSSL_NO_EC2M
+ else { /* field_type ==
+ * NID_X9_62_characteristic_two_field */
+
+ if ((group = EC_GROUP_new_curve_GF2m(p, a, b, ctx)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
+#endif
+
+ EC_GROUP_set_curve_name(group, curve.nid);
+
+ if ((P = EC_POINT_new(group)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_EC_LIB);
+ goto err;
+ }
+
+ if ((x = BN_bin2bn(params + 3 * param_len, param_len, NULL)) == NULL
+ || (y = BN_bin2bn(params + 4 * param_len, param_len, NULL)) == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_BN_LIB);
+ goto err;
+ }
+ if (!EC_POINT_set_affine_coordinates(group, P, x, y, ctx)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_EC_LIB);
+ goto err;
+ }
+ if ((order = BN_bin2bn(params + 5 * param_len, param_len, NULL)) == NULL
+ || !BN_set_word(x, (BN_ULONG)data->cofactor)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_BN_LIB);
+ goto err;
+ }
+ if (!EC_GROUP_set_generator(group, P, order, x)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_EC_LIB);
+ goto err;
+ }
+ if (seed_len) {
+ if (!EC_GROUP_set_seed(group, params - seed_len, seed_len)) {
+ ECerr(EC_F_EC_GROUP_NEW_FROM_DATA, ERR_R_EC_LIB);
+ goto err;
+ }
+ }
+ ok = 1;
+ err:
+ if (!ok) {
+ EC_GROUP_free(group);
+ group = NULL;
+ }
+ EC_POINT_free(P);
+ BN_CTX_free(ctx);
+ BN_free(p);
+ BN_free(a);
+ BN_free(b);
+ BN_free(order);
+ BN_free(x);
+ BN_free(y);
+ return group;
+}
+
+EC_GROUP *EC_GROUP_new_by_curve_name(int nid)
+{
+ size_t i;
+ EC_GROUP *ret = NULL;
+
+ if (nid <= 0)
+ return NULL;
+
+ for (i = 0; i < curve_list_length; i++)
+ if (curve_list[i].nid == nid) {
+ ret = ec_group_new_from_data(curve_list[i]);
+ break;
+ }
+
+ if (ret == NULL) {
+ ECerr(EC_F_EC_GROUP_NEW_BY_CURVE_NAME, EC_R_UNKNOWN_GROUP);
+ return NULL;
+ }
+
+ return ret;
+}
+
+size_t EC_get_builtin_curves(EC_builtin_curve *r, size_t nitems)
+{
+ size_t i, min;
+
+ if (r == NULL || nitems == 0)
+ return curve_list_length;
+
+ min = nitems < curve_list_length ? nitems : curve_list_length;
+
+ for (i = 0; i < min; i++) {
+ r[i].nid = curve_list[i].nid;
+ r[i].comment = curve_list[i].comment;
+ }
+
+ return curve_list_length;
+}
+
+/* Functions to translate between common NIST curve names and NIDs */
+
+typedef struct {
+ const char *name; /* NIST Name of curve */
+ int nid; /* Curve NID */
+} EC_NIST_NAME;
+
+static EC_NIST_NAME nist_curves[] = {
+ {"B-163", NID_sect163r2},
+ {"B-233", NID_sect233r1},
+ {"B-283", NID_sect283r1},
+ {"B-409", NID_sect409r1},
+ {"B-571", NID_sect571r1},
+ {"K-163", NID_sect163k1},
+ {"K-233", NID_sect233k1},
+ {"K-283", NID_sect283k1},
+ {"K-409", NID_sect409k1},
+ {"K-571", NID_sect571k1},
+ {"P-192", NID_X9_62_prime192v1},
+ {"P-224", NID_secp224r1},
+ {"P-256", NID_X9_62_prime256v1},
+ {"P-384", NID_secp384r1},
+ {"P-521", NID_secp521r1}
+};
+
+const char *EC_curve_nid2nist(int nid)
+{
+ size_t i;
+ for (i = 0; i < OSSL_NELEM(nist_curves); i++) {
+ if (nist_curves[i].nid == nid)
+ return nist_curves[i].name;
+ }
+ return NULL;
+}
+
+int EC_curve_nist2nid(const char *name)
+{
+ size_t i;
+ for (i = 0; i < OSSL_NELEM(nist_curves); i++) {
+ if (strcmp(nist_curves[i].name, name) == 0)
+ return nist_curves[i].nid;
+ }
+ return NID_undef;
+}
bgstack15