1.使用cocoapods 导入两个库

    pod 'CoreBitcoin'

    pod 'libsodium'

2.使用ed25519生成随机公私钥对

需要引入的头文件

#import "crypto_sign_ed25519.h"

#import "BTCBase58.h"

unsigned char seed[32],publickey[32],privatekey[64];

    int i = crypto_sign_ed25519_keypair(publickey,privatekey);

    NSData * publickey_data= [NSData dataWithBytes:publickeylength:32];

    NSData * privatekey_data= [NSData dataWithBytes:privatekeylength:64];

    NSString *privatekey =BTCBase58StringWithData(privatekey_data);

    NSString *publickey =BTCBase58StringWithData(publickey_data);

3.验证 (可使用tp钱包 IOST账号创建那里验证)

4. 私钥创建公钥方法

+ (NSString*)getPublicByPrivateKey:(NSString*)privatekey;

{

    NSData*privatekeyDecode =BTCDataFromBase58(privatekey);

    if((privatekeyDecode.length!=32) && (privatekeyDecode.length!=64))

    {

       return;

    }

    Byte codeKeyByteAry[privatekeyDecode.length];

    for(inti =0; i < privatekeyDecode.length; i++) {

        NSData*idata = [privatekeyDecode subdataWithRange:NSMakeRange(i,1)];

        codeKeyByteAry[i] =((Byte*)[idata bytes])[0];

    }

    unsigned char private_key_bytes = (unsigned char)codeKeyByteAry;

    unsigned char public_key[32];

    ge_p3A;

    private_key_bytes[0] &=248;

    private_key_bytes[31] &=63;

    private_key_bytes[31] |=64;

    ge_scalarmult_base(&A, private_key_bytes);

    ge_p3_tobytes(public_key, &A);

    memmove(public_key , private_key_bytes +32,32);

    NSData*publickeyData= [NSData dataWithBytes:public_keylength:32];

    NSString*publickey =BTCBase58StringWithData(publickeyData);

    return publickey;

}