mirror of
https://github.com/gregtwallace/apc-p15-tool.git
synced 2025-01-22 16:14:09 +00:00
28 lines
499 B
Go
28 lines
499 B
Go
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package asn1obj
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import (
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"encoding/asn1"
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"math/bits"
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)
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// BitString returns a BIT STRING of the content
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func BitString(content []byte) []byte {
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bs := asn1.BitString{
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Bytes: content,
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}
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// drop trailing 0s by removing them from overall length
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if len(content) > 0 {
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trailing0s := bits.TrailingZeros8(content[len(content)-1])
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bs.BitLength = 8*len(content) - trailing0s
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}
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// should never error
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asn1result, err := asn1.Marshal(bs)
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if err != nil {
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panic(err)
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}
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return asn1result
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}
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