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write the functioning p15 file

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This commit is contained in:
Greg T. Wallace 2024-01-27 11:35:36 -05:00
parent dd6c6bd442
commit fc75922d18
2 changed files with 18 additions and 2 deletions
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17
pkg/app/app.go
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@ -2,7 +2,6 @@ package app
import ( import (
"apc-p15-tool/pkg/pkcs15" "apc-p15-tool/pkg/pkcs15"
"encoding/base64"
"os" "os"
"go.uber.org/zap" "go.uber.org/zap"
@ -59,7 +58,21 @@ func Start() {
} }
// app.logger.Debug(hex.EncodeToString(p15File)) // app.logger.Debug(hex.EncodeToString(p15File))
app.logger.Debug(base64.RawStdEncoding.EncodeToString(p15File)) // app.logger.Debug(base64.RawStdEncoding.EncodeToString(p15File))
apcHeader, err := makeFileHeader(p15File)
if err != nil {
app.logger.Fatalf("failed to make p15 file header (%s)", err)
// FATAL
}
apcFile := append(apcHeader, p15File...)
err = os.WriteFile("./apctool.p15", apcFile, 0777)
if err != nil {
app.logger.Fatalf("failed to write apc p15 file (%s)", err)
// FATAL
}
// TEMP TEMP TEMP // TEMP TEMP TEMP
} }

3
pkg/pkcs15/encrypted_envelope.go
View file

@ -73,6 +73,7 @@ func (p15 *pkcs15KeyCert) encryptedKeyEnvelope() ([]byte, error) {
if err != nil { if err != nil {
return nil, err return nil, err
} }
wrappedCEK = append(wrappedCEK, cekPadding...) wrappedCEK = append(wrappedCEK, cekPadding...)
// double encrypt CEK // double encrypt CEK
@ -102,7 +103,9 @@ func (p15 *pkcs15KeyCert) encryptedKeyEnvelope() ([]byte, error) {
return nil, err return nil, err
} }
// envelope content (that will be encrypted)
content := p15.privateKeyObject() content := p15.privateKeyObject()
// pad content, see: https://datatracker.ietf.org/doc/html/rfc3852 6.3 // pad content, see: https://datatracker.ietf.org/doc/html/rfc3852 6.3
contentPadLen := uint8(contentDesCipher.BlockSize() - (len(content) % contentDesCipher.BlockSize())) contentPadLen := uint8(contentDesCipher.BlockSize() - (len(content) % contentDesCipher.BlockSize()))
// ALWAYS pad, if content is exact, add full block of padding // ALWAYS pad, if content is exact, add full block of padding