| sm2_sign {smcryptoR} | R Documentation |
SM2 Sign/Verify
Description
SM2 is an asymmetric encryption algorithm, so it can be used to sign and verify signatures of data. The purpose of doing this is to ensure the integrity of the data and guarantee its authenticity. Typically, the data owner uses the SM3 message digest algorithm to calculate the hash value and signs it with the private key, generating signed data. Then the owner distributes the original data and the signed data of the original data to the receiver. The receiver uses the public key and the received signed data to perform the verification operation. If the verification is successful, it is considered that the received original data has not been tampered with.
Usage
sm2_sign(id, data, private_key)
sm2_verify(id, data, sign, public_key)
sm2_sign_to_file(id, data, sign_file, private_key)
sm2_verify_from_file(id, data, sign_file, public_key)
Arguments
id |
the signer's id, must be a raw vector |
data |
orignal data, must be a raw vector |
private_key |
a private key represented as a hexadecimal string |
sign |
sign data of the original data or file |
public_key |
a public key represented as a hexadecimal string |
sign_file |
file path of the sign data to load |
Value
- sm2_sign
returns a raw vector contains the signature
- sm2_verify
returns 1 if verified, 0 if not verified
- sm2_sign_to_file
returns nothing, and a signature file will be saved in the specified path
- sm2_verify_from_file
returns 1 if verified, 0 if not verified
Examples
## sign and verify
id <- charToRaw('yumeng@company.com')
data <- charToRaw('abc')
keypair <- sm2_gen_keypair()
private_key <- keypair$private_key
public_key <- keypair$public_key
sign_data <- sm2_sign(id, data, private_key)
verify_result <- sm2_verify(id, data, sign_data, public_key)
## Not run:
sm2_sign_to_file(id, data, 'sign_data.sig', private_key)
sm2_verify_from_file(id, data, 'sign_data.sig', public_key)
## End(Not run)