crypto/hash/src/main/java/org/apache/shiro/crypto/hash/AbstractHash.java [175:180]:
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    protected MessageDigest getDigest(String algorithmName) throws UnknownAlgorithmException {
        try {
            return MessageDigest.getInstance(algorithmName);
        } catch (NoSuchAlgorithmException e) {
            String msg = "No native '" + algorithmName + "' MessageDigest instance available on the current JVM.";
            throw new UnknownAlgorithmException(msg, e);
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crypto/hash/src/main/java/org/apache/shiro/crypto/hash/SimpleHash.java [345:350]:
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    protected MessageDigest getDigest(String algorithmName) throws UnknownAlgorithmException {
        try {
            return MessageDigest.getInstance(algorithmName);
        } catch (NoSuchAlgorithmException e) {
            String msg = "No native '" + algorithmName + "' MessageDigest instance available on the current JVM.";
            throw new UnknownAlgorithmException(msg, e);
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