Skip to content

Unwrapping params should have SH256 and RSA_OAEP as digest and padding#116

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
subrahmanyaman merged 1 commit into from
Nov 3, 2022
Merged

Unwrapping params should have SH256 and RSA_OAEP as digest and padding #116

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions Applet/src/com/android/javacard/keymaster/KMKeymasterApplet.java
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -1358,6 +1358,15 @@ private void validateWrappingKeyBlob(){
if (!KMEnumArrayTag.contains(KMType.PURPOSE, KMType.WRAP_KEY, data[HW_PARAMETERS])) {
KMException.throwIt((KMError.INCOMPATIBLE_PURPOSE));
}

// Check that the digest and padding mode specified in unwrapping parameters are SHA2_256
// and RSA_OAEP respectively.
if (!KMEnumArrayTag.contains(KMType.DIGEST, KMType.SHA2_256, data[KEY_PARAMETERS])) {
KMException.throwIt(KMError.INCOMPATIBLE_DIGEST);
}
if (!KMEnumArrayTag.contains(KMType.PADDING, KMType.RSA_OAEP, data[KEY_PARAMETERS])) {
KMException.throwIt(KMError.INCOMPATIBLE_PADDING_MODE);
}
}

private short decryptTransportKey(short privExp, short modulus, short transportKey, byte[] scratchPad){
Expand Down