# SecKeyRawVerify(_:_:_:_:_:_:) Verifies a digital signature. ``` func SecKeyRawVerify(_ key: SecKey, _ padding: SecPadding, _ signedData: UnsafePointer, _ signedDataLen: Int, _ sig: UnsafePointer, _ sigLen: Int) -> OSStatus ``` ## Parameters `key` Public key with which to verify the data. `padding` The type of padding used. Possible values are listed in [`SecPadding`](/documentation/Security/SecPadding). Use [`PKCS1SHA1`](/documentation/Security/SecPadding/PKCS1SHA1) if you are verifying a PKCS1-style signature with DER encoding of the digest type and the signed data is a SHA1 digest of the actual data. Specify [`kSecPaddingNone`](/documentation/Security/SecPadding/kSecPaddingNone) if no padding was used. `signedData` The data for which the signature is being verified. Typically, a digest of the actual data is signed. `signedDataLen` Length in bytes of the data in the `signedData` buffer. `sig` The digital signature to be verified. `sigLen` Length of the data in the `sig` buffer. ## Return Value A result code. See [Security Framework Result Codes](/documentation/Security/security-framework-result-codes). --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)