mirror of
https://github.com/gregtwallace/apc-p15-tool.git
synced 2025-01-22 16:14:09 +00:00
cbb831e009
* apcssh: add descriptive error when required file(s) not passed * create: dont create key+cert file when key isn't supported by NMC2 * config: fix usage messages re: key types * p15 files: dont generate key+cert when it isn't needed (aka NMC2 doesn't support key) * pkcs15: pre-calculate envelope when making the p15 struct * pkcs15: omit key ID 8 & 9 from EC keys * pkcs15: update key decode logic * pkcs15: add key type value for easy determination of compatibility * pkcs15: add ec key support * pkcs15: separate functions for key and key+cert p15 files * update README see: https://github.com/gregtwallace/apc-p15-tool/issues/6
41 lines
984 B
Go
41 lines
984 B
Go
package pkcs15
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import (
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"apc-p15-tool/pkg/tools/asn1obj"
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"crypto/ecdsa"
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"crypto/rsa"
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)
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// privateKeyObject returns the ASN.1 representation of a private key
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func (p15 *pkcs15KeyCert) privateKeyObject() []byte {
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var privKeyObj []byte
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switch privKey := p15.key.(type) {
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case *rsa.PrivateKey:
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privKey.Precompute()
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// ensure all expected vals are available
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privKeyObj = asn1obj.Sequence([][]byte{
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// P
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asn1obj.IntegerExplicitValue(3, privKey.Primes[0]),
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// Q
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asn1obj.IntegerExplicitValue(4, privKey.Primes[1]),
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// Dp
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asn1obj.IntegerExplicitValue(5, privKey.Precomputed.Dp),
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// Dq
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asn1obj.IntegerExplicitValue(6, privKey.Precomputed.Dq),
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// Qinv
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asn1obj.IntegerExplicitValue(7, privKey.Precomputed.Qinv),
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})
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case *ecdsa.PrivateKey:
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// Only private piece is the integer D
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privKeyObj = asn1obj.Integer(privKey.D)
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default:
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// panic if unsupported key
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panic("private key type is unexpected and unsupported")
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}
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return privKeyObj
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}
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