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Fix error detection in contrib/pgcrypto's encrypt_iv() and decrypt_iv().
Due to oversights, the encrypt_iv() and decrypt_iv() functions failed to report certain types of invalid-input errors, and would instead return random garbage values. Marko Kreen, per report from Stefan Kaltenbrunner
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@ -341,8 +341,8 @@ pg_encrypt_iv(PG_FUNCTION_ARGS)
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err = px_combo_init(c, (uint8 *) VARDATA(key), klen,
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(uint8 *) VARDATA(iv), ivlen);
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if (!err)
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px_combo_encrypt(c, (uint8 *) VARDATA(data), dlen,
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(uint8 *) VARDATA(res), &rlen);
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err = px_combo_encrypt(c, (uint8 *) VARDATA(data), dlen,
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(uint8 *) VARDATA(res), &rlen);
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px_combo_free(c);
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@ -395,8 +395,8 @@ pg_decrypt_iv(PG_FUNCTION_ARGS)
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err = px_combo_init(c, (uint8 *) VARDATA(key), klen,
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(uint8 *) VARDATA(iv), ivlen);
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if (!err)
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px_combo_decrypt(c, (uint8 *) VARDATA(data), dlen,
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(uint8 *) VARDATA(res), &rlen);
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err = px_combo_decrypt(c, (uint8 *) VARDATA(data), dlen,
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(uint8 *) VARDATA(res), &rlen);
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px_combo_free(c);
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