Document more error codes
diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index d5e713e..e8d37a7 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -1996,6 +1996,14 @@
*
* \retval #PSA_SUCCESS
* Success.
+ * \retval #PSA_ERROR_INVALID_ARGUMENT
+ * The total input size passed to this operation is not valid for
+ * this particular algorithm. For example, the algorithm is a based
+ * on block cipher and requires a whole number of blocks, but the
+ * total input size is not a multiple of the block size.
+ * \retval #PSA_ERROR_INVALID_PADDING
+ * This is a decryption operation for an algorithm that includes
+ * padding, and the ciphertext does not contain valid padding.
* \retval #PSA_ERROR_BAD_STATE
* The operation state is not valid (not set up, IV required but
* not set, or already completed).
diff --git a/include/psa/crypto_values.h b/include/psa/crypto_values.h
index b53e1c7..fc0f963 100644
--- a/include/psa/crypto_values.h
+++ b/include/psa/crypto_values.h
@@ -149,7 +149,7 @@
*
* \warning If a function returns this error, it is undetermined
* whether the requested action has completed or not. Implementations
- * should return #PSA_SUCCESS on successful completion whenver
+ * should return #PSA_SUCCESS on successful completion whenever
* possible, however functions may return #PSA_ERROR_COMMUNICATION_FAILURE
* if the requested action was completed successfully in an external
* cryptoprocessor but there was a breakdown of communication before