Курнат Андрей
67 lines
1.7 KiB
Go
67 lines
1.7 KiB
Go
package dsig
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import (
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"crypto/ecdsa"
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"crypto/ed25519"
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"crypto/rsa"
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)
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// isValidRSAKey validates that the provided key type is appropriate for RSA algorithms.
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// It returns false if the key is clearly incompatible (e.g., ECDSA or EdDSA keys).
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func isValidRSAKey(key any) bool {
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switch key.(type) {
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case
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ecdsa.PrivateKey, *ecdsa.PrivateKey,
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ed25519.PrivateKey:
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// these are NOT ok for RSA algorithms
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return false
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}
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return true
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}
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// isValidECDSAKey validates that the provided key type is appropriate for ECDSA algorithms.
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// It returns false if the key is clearly incompatible (e.g., RSA or EdDSA keys).
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func isValidECDSAKey(key any) bool {
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switch key.(type) {
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case
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ed25519.PrivateKey,
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rsa.PrivateKey, *rsa.PrivateKey:
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// these are NOT ok for ECDSA algorithms
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return false
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}
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return true
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}
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// isValidEDDSAKey validates that the provided key type is appropriate for EdDSA algorithms.
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// It returns false if the key is clearly incompatible (e.g., RSA or ECDSA keys).
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func isValidEDDSAKey(key any) bool {
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switch key.(type) {
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case
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ecdsa.PrivateKey, *ecdsa.PrivateKey,
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rsa.PrivateKey, *rsa.PrivateKey:
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// these are NOT ok for EdDSA algorithms
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return false
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}
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return true
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}
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// VerificationError represents an error that occurred during signature verification.
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type VerificationError struct {
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message string
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}
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func (e *VerificationError) Error() string {
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return e.message
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}
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// NewVerificationError creates a new verification error with the given message.
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func NewVerificationError(message string) error {
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return &VerificationError{message: message}
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}
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// IsVerificationError checks if the given error is a verification error.
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func IsVerificationError(err error) bool {
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_, ok := err.(*VerificationError)
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return ok
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}
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