Skip to main content

​
SecurityLocalVerifyRSA

CAPL Functions » Security » SecurityLocalVerifyRSA Valid for: CANoe DE • CANoe4SW DE

​
Function Syntax

SecurityLocalVerifyRSA(byte publicKey[], dword publicKeyLength, byte data[], dword dataLength, byte signature[], dword signatureLength, dword signatureScheme, dword* verificationResult)

​
Description

Verifies signature of data with a given public key using asymmetric RSA signature algorithm. Signing scheme can be selected via the parameter.

​
Parameters

  • publicKey: The public key to be used for verification.
  • publicKeyLength: Length of the public key to be used for verification.
  • data: Data to be verified.
  • dataLength: Length of the data to be verified.
  • signature: Signature to be verified.
  • signatureLength: Length of signature to be verified.
  • signatureScheme:
    • PKCS1_v1_5_SHA-256 = 1
    • PKCS1_v1_5_SHA-384 = 2
    • PKCS1_v1_5_SHA-512 = 3
    • SSA_PSS_SHA-256 = 4
    • SSA_PSS_SHA-384 = 5
    • SSA_PSS_SHA-512 = 6
  • verificationResult [OUT]: Result of the signature verification.

​
Return Values

  • 1: Success. A value of 1 means that the action was successful. Note: This does not necessarily mean that the signature is valid. Check VerificationResult therefore!
  • <= 0: Error. A value less than or equal to 0 means error.

​
Example

byte plainData[30] = {0x42, …, 0x42};
dword plainDataLength = elcount(plainData);
byte signature[1000] = {0xAA, ..., 0xAA};
dword signatureLength = elcount(signature);
dword signatureScheme = 1;

long result;

byte pubKey[634] = {0x2D, …, 0x2D};
dword pubKeyLength = elcount(pubKey);
dword verificationResult;

result = SecurityLocalVerifyRSA(pubKey, pubKeyLength, plainData, plainDataLength, signature, signatureLength, signatureScheme, verificationResult);
SecurityLocalDecryptRsa • SecurityLocalEncryptRsa • SecurityLocalSignRsa