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In import key, handled RSA private key of size 257 bytes #211

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Merged
mdwivedi merged 1 commit into from
Aug 5, 2022
Merged

In import key, handled RSA private key of size 257 bytes #211

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5 changes: 3 additions & 2 deletions Applet/src/com/android/javacard/keymaster/KMAsn1Parser.java
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Original file line number Diff line number Diff line change
Expand Up @@ -168,20 +168,21 @@ public short decodeRsaPrivateKey(short version){
len = header(ASN1_INTEGER);
short modulus = KMByteBlob.instance(len);
getBytes(modulus);
updateModulus(modulus);
updateRsaKeyBuffer(modulus);
len = header(ASN1_INTEGER);
short pubKey = KMByteBlob.instance(len);
getBytes(pubKey);
len = header(ASN1_INTEGER);
short privKey = KMByteBlob.instance(len);
getBytes(privKey);
updateRsaKeyBuffer(privKey);
KMArray.cast(resp).add((short)0, modulus);
KMArray.cast(resp).add((short)1, pubKey);
KMArray.cast(resp).add((short)2, privKey);
return resp;
}

private void updateModulus(short blob) {
private void updateRsaKeyBuffer(short blob) {
byte[] buffer = KMByteBlob.cast(blob).getBuffer();
short startOff = KMByteBlob.cast(blob).getStartOff();
short len = KMByteBlob.cast(blob).length();
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