digest: add NewDigestFromBytes for completeness
Signed-off-by: Stephen J Day <stephen.day@docker.com>
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1 changed files with 9 additions and 1 deletions
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@ -28,7 +28,15 @@ type Digest string
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// NewDigest returns a Digest from alg and a hash.Hash object.
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func NewDigest(alg Algorithm, h hash.Hash) Digest {
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return Digest(fmt.Sprintf("%s:%x", alg, h.Sum(nil)))
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return NewDigestFromBytes(alg, h.Sum(nil))
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}
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// NewDigestFromBytes returns a new digest from the byte contents of p.
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// Typically, this can come from hash.Hash.Sum(...) or xxx.SumXXX(...)
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// functions. This is also useful for rebuilding digests from binary
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// serializations.
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func NewDigestFromBytes(alg Algorithm, p []byte) Digest {
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return Digest(fmt.Sprintf("%s:%x", alg, p))
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}
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// NewDigestFromHex returns a Digest from alg and a the hex encoded digest.
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