29 lines
644 B
Go
29 lines
644 B
Go
package pow
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// Verifier handles validation of PoW challenges
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type Verifier struct {
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config *Config
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}
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// NewVerifier creates a new challenge verifier
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func NewVerifier(config *Config) *Verifier {
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return &Verifier{
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config: config,
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}
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}
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// VerifyChallenge validates challenge authenticity and expiration
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func (v *Verifier) VerifyChallenge(challenge *Challenge) error {
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// Check expiration first (cheap operation)
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if challenge.IsExpired(v.config.ChallengeTTL) {
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return ErrExpiredChallenge
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}
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// Check HMAC signature (expensive operation)
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if err := challenge.VerifyHMAC(v.config.HMACSecret); err != nil {
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return err
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}
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return nil
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}
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