Commit 96641ee1 authored by Eric Rossman's avatar Eric Rossman Committed by Linus Torvalds
Browse files

[PATCH] s390: CEX2A crt message length 



Undetected edge case for CRT messages to CEX2A caused length to be too short,
thus truncating the message.  The solution was to check a different variable
which actually determines which key type is being used.

Increment version number in z90main.c to correct level of 1.3.3, fix copyright
year and add comment about bitlength limit of CEX2A.

Signed-off-by: default avatarEric Rossman <edrossma@us.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent b6cba4ee

drivers/s390/crypto/z90hardware.c

+9 −1
Original line number Diff line number Diff line
@@ -2214,7 +2214,7 @@ ICACRT_msg_to_type50CRT_msg(struct ica_rsa_modexpo_crt *icaMsg_p, 
		long_len = 128;

	}



	tmp_size = ((mod_len <= 128) ? TYPE50_CRB1_LEN : TYPE50_CRB2_LEN) +

	tmp_size = ((long_len <= 64) ? TYPE50_CRB1_LEN : TYPE50_CRB2_LEN) +

		    CALLER_HEADER;



	memset(z90cMsg_p, 0, tmp_size);
@@ -2479,8 +2479,16 @@ convert_response(unsigned char *response, unsigned char *buffer, 


	if (reply_code)

		switch (reply_code) {

		case REP82_ERROR_MACHINE_FAILURE:

			if (errh_p->type == TYPE82_RSP_CODE)

				PRINTKW("Machine check failure\n");

			else

				PRINTKW("Module failure\n");

			return REC_HARDWAR_ERR;

		case REP82_ERROR_OPERAND_INVALID:

			return REC_OPERAND_INV;

		case REP88_ERROR_MESSAGE_MALFORMD:

			PRINTKW("Message malformed\n");

			return REC_OPERAND_INV;

		case REP82_ERROR_OPERAND_SIZE:

			return REC_OPERAND_SIZE;

drivers/s390/crypto/z90main.c

+3 −2
Original line number Diff line number Diff line 
/*

 *  linux/drivers/s390/crypto/z90main.c

 *

 *  z90crypt 1.3.2

 *  z90crypt 1.3.3

 *

 *  Copyright (C)  2001, 2004 IBM Corporation

 *  Copyright (C)  2001, 2005 IBM Corporation

 *  Author(s): Robert Burroughs (burrough@us.ibm.com)

 *             Eric Rossman (edrossma@us.ibm.com)

 *
@@ -991,6 +991,7 @@ remove_device(struct device *device_p) 
 * PCIXCC_MCL2   512-2048     ----- (applying any GA LIC will make an MCL3 card)

 * PCIXCC_MCL3   -----        128-2048

 * CEX2C         512-2048     128-2048

 * CEX2A          ??-2048     same (the lower limit is less than 128 bit...)

 *

 * ext_bitlens (extended bitlengths) is a global, since you should not apply an

 * MCL to just one card in a machine. We assume, at first, that all cards have

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