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- genSpec: fallback to BC provider

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This commit is contained in:
zzz
2013-09-06 13:53:15 +00:00
parent d27c465371
commit 928b4bbbe5
1 changed files with 13 additions and 2 deletions
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15
core/java/src/net/i2p/crypto/ECConstants.java
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@ -266,7 +266,7 @@ class ECConstants {
/**
* Generate a spec from a curve name
* @return null iffail
* @return null if fail
*/
private static ECParameterSpec genSpec(String name) {
// convert the ECGenParameterSpecs to ECParameterSpecs for several reasons:
@ -276,7 +276,18 @@ class ECConstants {
// to convert a I2P key to a Java key. Sadly, a ECGenParameterSpec
// is not a ECParameterSpec.
try {
AlgorithmParameters ap = AlgorithmParameters.getInstance("EC");
AlgorithmParameters ap;
try {
ap = AlgorithmParameters.getInstance("EC");
} catch (Exception e) {
if (BC_AVAILABLE) {
log("Named curve " + name + " is not available, trying BC", e);
ap = AlgorithmParameters.getInstance("EC", "BC");
log("Fallback to BC worked for named curve " + name);
} else {
throw e;
}
}
ECGenParameterSpec ecgps = new ECGenParameterSpec(name);
ap.init(ecgps);
ECParameterSpec rv = ap.getParameterSpec(ECParameterSpec.class);