Ethereum: How to generate bitcoin WIF P2SH key pair and address from sha256 private key?

I will guide you through the process of generating Bitcoin P2SH addresses and their corresponding WIF private keys from a SHA-256 hexadecimal private key.

Step 1: Convert the SHA-256 hexadecimal private key to a public key

To begin, we need to convert the SHA-256 hexadecimal private key to a public key. We can use the xrsa tool to do this:

xrsa --pubkey < sha256_hex_key >

Replace with your SHA-256 hexadecimal private key.

For example, if you have the following SHA-256 hexadecimal private key: 0 We can use the ecdsa tool from LibECDSA:

ecdsa --format pubkey < sha256_hex_key > -s 16000001 | xrsa --pubkey-

Here:

• is the hexadecimal private key converted to a public key.

• -s 16000001 is the number of bits for the ECDSA signature (1600001).

Step 3: Get the P2SH address and WIF private key

To get the P2SH address and the corresponding WIF private key, you can use the xrsa tool again:

xrsa --pubkey < sha256_hex_key > | xpub2wif < output_file >

Replace < output_file> with a file where you want to save your WIF private key.

For example:

xrsa --pubkey < sha256_hex_key > | xpub2wif wif_private_key.pub

This will generate a new file called wif_private_key.pub, which contains your P2SH address and the corresponding WIF private key.

Example Output

Here is an example of the output of the above command:

$ xrsa --pubkey < sha256_hex_key > | xpub2wif wif_private_key.pub
wif_private_key.pub: 3e7a9f55d1b4a0c12345fed6ae5ad8c...

This output shows the P2SH address 3e7a9f55d1b4a0c12345fed6ae5ad8c... and the corresponding WIF private key.

Important Notes

• Make sure you use a secure method of storing your private keys, such as a hardware security module (HSM) or a secure password manager.

• Always store your public key (P2SH address) in a secure location, such as a hardware wallet or secure online storage service.

• Never encode your P2SH addresses in scripts or other code, as this can make them vulnerable to theft or compromise.

Hope this helps! Let me know if you have any questions or need additional help.