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31 lines
658 B
Go
31 lines
658 B
Go
package in_toto
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import (
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"crypto/sha256"
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"crypto/sha512"
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"hash"
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)
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/*
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getHashMapping returns a mapping from hash algorithm to supported hash
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interface.
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*/
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func getHashMapping() map[string]func() hash.Hash {
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return map[string]func() hash.Hash{
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"sha256": sha256.New,
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"sha512": sha512.New,
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"sha384": sha512.New384,
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}
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}
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/*
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hashToHex calculates the hash over data based on hash algorithm h.
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*/
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func hashToHex(h hash.Hash, data []byte) []byte {
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h.Write(data)
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// We need to use h.Sum(nil) here, because otherwise hash.Sum() appends
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// the hash to the passed data. So instead of having only the hash
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// we would get: "dataHASH"
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return h.Sum(nil)
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}
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