github.com/keybase/client/go@v0.0.0-20240309051027-028f7c731f8b/kbcrypto/signature_prefix.go (about)

     1  // Copyright 2018 Keybase, Inc. All rights reserved. Use of
     2  // this source code is governed by the included BSD license.
     3  
     4  package kbcrypto
     5  
     6  import "bytes"
     7  
     8  type SignaturePrefix string
     9  
    10  const (
    11  	SignaturePrefixKBFS             SignaturePrefix = "Keybase-KBFS-1"
    12  	SignaturePrefixSigchain         SignaturePrefix = "Keybase-Sigchain-1"
    13  	SignaturePrefixSigchain3        SignaturePrefix = "Keybase-Sigchain-3"
    14  	SignaturePrefixChatAttachment   SignaturePrefix = "Keybase-Chat-Attachment-1"
    15  	SignaturePrefixNIST             SignaturePrefix = "Keybase-Auth-NIST-1"
    16  	SignaturePrefixTeamStore        SignaturePrefix = "Keybase-TeamStore-1"
    17  	SignaturePrefixNISTWebAuthToken SignaturePrefix = "Keybase-Auth-NIST-Web-Token-1"
    18  	// Chat prefixes for each MessageBoxedVersion.
    19  	SignaturePrefixChatMBv1 SignaturePrefix = "Keybase-Chat-1"
    20  	SignaturePrefixChatMBv2 SignaturePrefix = "Keybase-Chat-2"
    21  )
    22  
    23  func (p SignaturePrefix) IsWhitelisted() bool {
    24  	if p.IsWhitelistedTest() {
    25  		return true
    26  	}
    27  	switch p {
    28  	case SignaturePrefixKBFS, SignaturePrefixSigchain, SignaturePrefixChatAttachment,
    29  		SignaturePrefixNIST, SignaturePrefixChatMBv1, SignaturePrefixChatMBv2,
    30  		SignaturePrefixSigchain3, SignaturePrefixTeamStore:
    31  		return true
    32  	default:
    33  		return false
    34  	}
    35  }
    36  
    37  func (p SignaturePrefix) HasNullByte() bool {
    38  	return bytes.IndexByte([]byte(p), byte(0)) != -1
    39  }
    40  
    41  func (p SignaturePrefix) Prefix(msg []byte) []byte {
    42  	prefix := append([]byte(p), 0)
    43  	return append(prefix, msg...)
    44  }