Documentation
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Overview ¶
Copyright 2009 The Go Authors. All rights reserved. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
Package rsa implements RSA encryption as specified in PKCS #1 and RFC 8017.
RSA is a single, fundamental operation that is used in this package to implement either public-key encryption or public-key signatures.
The original specification for encryption and signatures with RSA is PKCS #1 and the terms "RSA encryption" and "RSA signatures" by default refer to PKCS #1 version 1.5. However, that specification has flaws and new designs should use version 2, usually called by just OAEP and PSS, where possible.
Two sets of interfaces are included in this package. When a more abstract interface isn't necessary, there are functions for encrypting/decrypting with v1.5/OAEP and signing/verifying with v1.5/PSS. If one needs to abstract over the public key primitive, the PrivateKey type implements the Decrypter and Signer interfaces from the crypto package.
The RSA operations in this package are not implemented using constant-time algorithms.
Index ¶
Constants ¶
This section is empty.
Variables ¶
var ErrVerification = errors.New("crypto/rsa: verification error")
ErrVerification represents a failure to verify a signature. It is deliberately vague to avoid adaptive attacks.
Functions ¶
func VerifyPKCS1v15 ¶
VerifyPKCS1v15 verifies an RSA PKCS #1 v1.5 signature. hashed is the result of hashing the input message using the given hash function and sig is the signature. A valid signature is indicated by returning a nil error. If hash is zero then hashed is used directly. This isn't advisable except for interoperability.
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