mirror of https://github.com/spiffe/go-spiffe.git
35 lines
861 B
Go
35 lines
861 B
Go
package cryptoutil
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import (
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"bytes"
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"crypto"
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"crypto/ecdsa"
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"crypto/ed25519"
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"crypto/rsa"
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"fmt"
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)
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func PublicKeyEqual(a, b crypto.PublicKey) (bool, error) {
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switch a := a.(type) {
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case *rsa.PublicKey:
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rsaPublicKey, ok := b.(*rsa.PublicKey)
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return ok && RSAPublicKeyEqual(a, rsaPublicKey), nil
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case *ecdsa.PublicKey:
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ecdsaPublicKey, ok := b.(*ecdsa.PublicKey)
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return ok && ECDSAPublicKeyEqual(a, ecdsaPublicKey), nil
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case ed25519.PublicKey:
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ed25519PublicKey, ok := b.(ed25519.PublicKey)
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return ok && bytes.Equal(a, ed25519PublicKey), nil
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default:
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return false, fmt.Errorf("unsupported public key type %T", a)
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}
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}
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func RSAPublicKeyEqual(a, b *rsa.PublicKey) bool {
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return a.E == b.E && a.N.Cmp(b.N) == 0
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}
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func ECDSAPublicKeyEqual(a, b *ecdsa.PublicKey) bool {
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return a.Curve == b.Curve && a.X.Cmp(b.X) == 0 && a.Y.Cmp(b.Y) == 0
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}
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