8498ecf890
ChaCha20-Poly1305, AES-256-GCM, Argon2 key derivation, OpenPGP challenge-response auth, and trust tier policy engine. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
package crypt
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import (
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"crypto/sha256"
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"crypto/sha512"
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"encoding/hex"
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"io"
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"os"
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core "forge.lthn.ai/core/go/pkg/framework/core"
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)
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// SHA256File computes the SHA-256 checksum of a file and returns it as a hex string.
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func SHA256File(path string) (string, error) {
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f, err := os.Open(path)
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if err != nil {
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return "", core.E("crypt.SHA256File", "failed to open file", err)
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}
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defer func() { _ = f.Close() }()
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h := sha256.New()
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if _, err := io.Copy(h, f); err != nil {
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return "", core.E("crypt.SHA256File", "failed to read file", err)
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}
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return hex.EncodeToString(h.Sum(nil)), nil
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}
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// SHA512File computes the SHA-512 checksum of a file and returns it as a hex string.
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func SHA512File(path string) (string, error) {
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f, err := os.Open(path)
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if err != nil {
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return "", core.E("crypt.SHA512File", "failed to open file", err)
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}
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defer func() { _ = f.Close() }()
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h := sha512.New()
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if _, err := io.Copy(h, f); err != nil {
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return "", core.E("crypt.SHA512File", "failed to read file", err)
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}
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return hex.EncodeToString(h.Sum(nil)), nil
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}
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// SHA256Sum computes the SHA-256 checksum of data and returns it as a hex string.
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func SHA256Sum(data []byte) string {
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h := sha256.Sum256(data)
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return hex.EncodeToString(h[:])
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}
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// SHA512Sum computes the SHA-512 checksum of data and returns it as a hex string.
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func SHA512Sum(data []byte) string {
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h := sha512.Sum512(data)
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return hex.EncodeToString(h[:])
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}
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