Implementation process of signature:

Input: original text, private key

Output: signature value

1, hash the original.

2. Encrypt the hash with the private key, and the result is the signature value.

Implementation process of verifying signature:

Input: signature value, original text and public key.

Output: Verify whether it passed or not.

1, so that the original HASH 1.

2. Decrypt the signature value with the public key to obtain HASH2.

3. Compare the HASH 1 in step1with HASH2 in step 2. If the two hashes are the same, they pass the verification; otherwise, they fail the verification.