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Image encryption/decryption support in skopeo

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Signed-off-by: Harshal Patil <harshal.patil@in.ibm.com>
Signed-off-by: Brandon Lum <lumjjb@gmail.com>
This commit is contained in:
Harshal Patil
2019-09-23 14:17:42 +05:30
parent 912b7e1e09
commit 39ff039b3b
176 changed files with 21673 additions and 3828 deletions
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43
vendor/github.com/klauspost/compress/zstd/fse_encoder.go generated vendored
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@@ -502,21 +502,6 @@ func (s *fseEncoder) validateNorm() (err error) {
// writeCount will write the normalized histogram count to header.
// This is read back by readNCount.
func (s *fseEncoder) writeCount(out []byte) ([]byte, error) {
var (
tableLog = s.actualTableLog
tableSize = 1 << tableLog
previous0 bool
charnum uint16
maxHeaderSize = ((int(s.symbolLen) * int(tableLog)) >> 3) + 3
// Write Table Size
bitStream = uint32(tableLog - minEncTablelog)
bitCount = uint(4)
remaining = int16(tableSize + 1) /* +1 for extra accuracy */
threshold = int16(tableSize)
nbBits = uint(tableLog + 1)
)
if s.useRLE {
return append(out, s.rleVal), nil
}
@@ -524,7 +509,28 @@ func (s *fseEncoder) writeCount(out []byte) ([]byte, error) {
// Never write predefined.
return out, nil
}
outP := len(out)
var (
tableLog = s.actualTableLog
tableSize = 1 << tableLog
previous0 bool
charnum uint16
// maximum header size plus 2 extra bytes for final output if bitCount == 0.
maxHeaderSize = ((int(s.symbolLen) * int(tableLog)) >> 3) + 3 + 2
// Write Table Size
bitStream = uint32(tableLog - minEncTablelog)
bitCount = uint(4)
remaining = int16(tableSize + 1) /* +1 for extra accuracy */
threshold = int16(tableSize)
nbBits = uint(tableLog + 1)
outP = len(out)
)
if cap(out) < outP+maxHeaderSize {
out = append(out, make([]byte, maxHeaderSize*3)...)
out = out[:len(out)-maxHeaderSize*3]
}
out = out[:outP+maxHeaderSize]
// stops at 1
@@ -594,11 +600,14 @@ func (s *fseEncoder) writeCount(out []byte) ([]byte, error) {
}
}
if outP+2 > len(out) {
return nil, fmt.Errorf("internal error: %d > %d, maxheader: %d, sl: %d, tl: %d, normcount: %v", outP+2, len(out), maxHeaderSize, s.symbolLen, int(tableLog), s.norm[:s.symbolLen])
}
out[outP] = byte(bitStream)
out[outP+1] = byte(bitStream >> 8)
outP += int((bitCount + 7) / 8)
if uint16(charnum) > s.symbolLen {
if charnum > s.symbolLen {
return nil, errors.New("internal error: charnum > s.symbolLen")
}
return out[:outP], nil