-
Notifications
You must be signed in to change notification settings - Fork 262
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Hide OpenSSL headers in private module
- Loading branch information
1 parent
5442608
commit 33521ba
Showing
21 changed files
with
297 additions
and
353 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| // | ||
| // OpenSSL.h | ||
| // BitcoinKit | ||
| // | ||
| // Created by kishikawakatsumi on 2018/02/09. | ||
| // Copyright © 2018 Kishikawa Katsumi. All rights reserved. | ||
| // | ||
|
|
||
| #import <Foundation/Foundation.h> | ||
|
|
||
| NS_ASSUME_NONNULL_BEGIN | ||
| @interface BitcoinKitInternal : NSObject | ||
|
|
||
| + (NSData *)sha256:(NSData *)data; | ||
| + (NSData *)ripemd160:(NSData *)data; | ||
| + (NSData *)hmacsha512:(NSData *)data key:(NSData *)key; | ||
|
|
||
| + (NSData *)computePublicKeyFromPrivateKey:(NSData *)privateKey compression:(BOOL)compression; | ||
|
|
||
| + (NSData *)deriveKey:(NSData *)password salt:(NSData *)salt iterations:(NSInteger)iterations keyLength:(NSInteger)keyLength; | ||
| + (nullable NSArray<NSData *> *)deriveKey:(nullable NSData *)privateKey publicKey:(NSData *)publicKey chainCode:(NSData *)chainCode atIndex:(uint32_t)index hardened:(BOOL)hardened; | ||
|
|
||
| @end | ||
| NS_ASSUME_NONNULL_END |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| // | ||
| // OpenSSL.m | ||
| // BitcoinKit | ||
| // | ||
| // Created by kishikawakatsumi on 2018/02/09. | ||
| // Copyright © 2018 Kishikawa Katsumi. All rights reserved. | ||
| // | ||
|
|
||
| #import "BitcoinKitInternal.h" | ||
| #import <openssl/sha.h> | ||
| #import <openssl/ripemd.h> | ||
| #import <openssl/hmac.h> | ||
| #import <openssl/ec.h> | ||
|
|
||
| @implementation BitcoinKitInternal | ||
|
|
||
| + (NSData *)sha256:(NSData *)data { | ||
| NSMutableData *result = [NSMutableData dataWithLength:SHA256_DIGEST_LENGTH]; | ||
| SHA256(data.bytes, data.length, result.mutableBytes); | ||
| return result; | ||
| } | ||
|
|
||
| + (NSData *)ripemd160:(NSData *)data { | ||
| NSMutableData *result = [NSMutableData dataWithLength:RIPEMD160_DIGEST_LENGTH]; | ||
| RIPEMD160(data.bytes, data.length, result.mutableBytes); | ||
| return result; | ||
| } | ||
|
|
||
| + (NSData *)hmacsha512:(NSData *)data key:(NSData *)key { | ||
| unsigned int length = SHA512_DIGEST_LENGTH; | ||
| NSMutableData *result = [NSMutableData dataWithLength:length]; | ||
| HMAC(EVP_sha512(), key.bytes, (int)key.length, data.bytes, data.length, result.mutableBytes, &length); | ||
| return result; | ||
| } | ||
|
|
||
| + (NSData *)generatePrivateKey { | ||
| return [NSData data]; | ||
| } | ||
|
|
||
| + (NSData *)computePublicKeyFromPrivateKey:(NSData *)privateKey compression:(BOOL)compression { | ||
| BN_CTX *ctx = BN_CTX_new(); | ||
| EC_KEY *key = EC_KEY_new_by_curve_name(NID_secp256k1); | ||
| const EC_GROUP *group = EC_KEY_get0_group(key); | ||
|
|
||
| BIGNUM *prv = BN_new(); | ||
| BN_bin2bn(privateKey.bytes, (int)privateKey.length, prv); | ||
|
|
||
| EC_POINT *pub = EC_POINT_new(group); | ||
| EC_POINT_mul(group, pub, prv, nil, nil, ctx); | ||
| EC_KEY_set_private_key(key, prv); | ||
| EC_KEY_set_public_key(key, pub); | ||
|
|
||
| NSMutableData *result; | ||
| if (compression) { | ||
| EC_KEY_set_conv_form(key, POINT_CONVERSION_COMPRESSED); | ||
| unsigned char *bytes = NULL; | ||
| int length = i2o_ECPublicKey(key, &bytes); | ||
| result = [NSMutableData dataWithBytesNoCopy:bytes length:length]; | ||
| } else { | ||
| result = [NSMutableData dataWithLength:65]; | ||
| BIGNUM *n = BN_new(); | ||
| EC_POINT_point2bn(group, pub, POINT_CONVERSION_UNCOMPRESSED, n, ctx); | ||
| BN_bn2bin(n, result.mutableBytes); | ||
| BN_free(n); | ||
| } | ||
|
|
||
| BN_free(prv); | ||
| EC_POINT_free(pub); | ||
| EC_KEY_free(key); | ||
| BN_CTX_free(ctx); | ||
|
|
||
| return result; | ||
| } | ||
|
|
||
| + (NSData *)deriveKey:(NSData *)password salt:(NSData *)salt iterations:(NSInteger)iterations keyLength:(NSInteger)keyLength { | ||
| NSMutableData *result = [NSMutableData dataWithLength:keyLength]; | ||
| PKCS5_PBKDF2_HMAC(password.bytes, (int)password.length, salt.bytes, (int)salt.length, (int)iterations, EVP_sha512(), (int)keyLength, result.mutableBytes); | ||
| return result; | ||
| } | ||
|
|
||
| + (NSArray *)deriveKey:(nullable NSData *)privateKey publicKey:(NSData *)publicKey chainCode:(NSData *)chainCode atIndex:(uint32_t)index hardened:(BOOL)hardened { | ||
| BN_CTX *ctx = BN_CTX_new(); | ||
|
|
||
| NSMutableData *data = [NSMutableData data]; | ||
| if (hardened) { | ||
| uint8_t padding = 0; | ||
| [data appendBytes:&padding length:1]; | ||
| [data appendData:privateKey]; | ||
| } else { | ||
| [data appendData:publicKey]; | ||
| } | ||
|
|
||
| uint32_t i = OSSwapHostToBigInt32(hardened ? (0x80000000 | index) : index); | ||
| [data appendBytes:&i length:sizeof(i)]; | ||
|
|
||
| NSData *digest = [self hmacsha512:data key:chainCode]; | ||
| NSData *prv = [digest subdataWithRange:NSMakeRange(0, 32)]; | ||
| NSData *derivedChainCode = [digest subdataWithRange:NSMakeRange(32, 32)]; | ||
|
|
||
| BIGNUM *curveOrder = BN_new(); | ||
| BN_hex2bn(&curveOrder, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141"); | ||
|
|
||
| BIGNUM *factor = BN_new(); | ||
| BN_bin2bn(prv.bytes, (int)prv.length, factor); | ||
| if (BN_cmp(factor, curveOrder) < 0) { | ||
| return nil; | ||
| } | ||
|
|
||
| NSMutableData *result; | ||
| if (privateKey) { | ||
| BIGNUM *pkNum = BN_new(); | ||
| BN_bin2bn(privateKey.bytes, (int)privateKey.length, pkNum); | ||
|
|
||
| BN_mod_add(pkNum, pkNum, factor, curveOrder, ctx); | ||
| if (BN_is_zero(pkNum)) { | ||
| return nil; | ||
| } | ||
|
|
||
| int numBytes = BN_num_bytes(pkNum); | ||
| result = [NSMutableData dataWithLength:numBytes]; | ||
| BN_bn2bin(pkNum, result.mutableBytes); | ||
|
|
||
| BN_free(pkNum); | ||
| } else { | ||
| BIGNUM *pubNum = BN_new(); | ||
| BN_bin2bn(publicKey.bytes, (int)publicKey.length, pubNum); | ||
| EC_GROUP *group = EC_GROUP_new_by_curve_name(NID_secp256k1); | ||
|
|
||
| EC_POINT *point = EC_POINT_new(group); | ||
| EC_POINT_bn2point(group, pubNum, point, ctx); | ||
| EC_POINT_mul(group, point, factor, point, BN_value_one(), ctx); | ||
| if (EC_POINT_is_at_infinity(group, point) == 0) { | ||
| return nil; | ||
| } | ||
|
|
||
| BIGNUM *pointNum = BN_new(); | ||
| result = [NSMutableData dataWithLength:33]; | ||
|
|
||
| EC_POINT_point2bn(group, point, POINT_CONVERSION_COMPRESSED, pointNum, ctx); | ||
| BN_bn2bin(pointNum, result.mutableBytes); | ||
|
|
||
| BN_free(pointNum); | ||
| EC_POINT_free(point); | ||
| EC_GROUP_free(group); | ||
| } | ||
|
|
||
| BN_free(factor); | ||
| BN_free(curveOrder); | ||
| BN_CTX_free(ctx); | ||
|
|
||
| return @[result, derivedChainCode]; | ||
| } | ||
|
|
||
| @end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| module BitcoinKitInternal { | ||
| header "../BitcoinKitInternal.h" | ||
| link "crypto" | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.