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tokensigner.go
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tokensigner.go
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/*
* Copyright (C) 2015-2018 Virgil Security Inc.
*
* Lead Maintainer: Virgil Security Inc. <support@virgilsecurity.com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* (1) Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* (2) Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* (3) Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
package cryptoimpl
import "crypto/sha512"
type VirgilAccessTokenSigner struct {
Crypto *VirgilCrypto
}
func NewVirgilAccessTokenSigner() *VirgilAccessTokenSigner {
return &VirgilAccessTokenSigner{Crypto: &VirgilCrypto{}}
}
func (t *VirgilAccessTokenSigner) GenerateTokenSignature(data []byte, privateKey interface {
IsPrivate() bool
Identifier() []byte
}) ([]byte, error) {
return t.Crypto.Sign(data, privateKey.(*ed25519PrivateKey))
}
func (t *VirgilAccessTokenSigner) VerifyTokenSignature(data []byte, signature []byte, publicKey interface {
IsPublic() bool
Identifier() []byte
}) error {
hash := sha512.Sum512(data)
return t.Crypto.VerifyHashSignature(hash[:], signature, publicKey.(*ed25519PublicKey))
}
func (t *VirgilAccessTokenSigner) GetAlgorithm() string {
return "VEDS512"
}