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| /* SPDX-License-Identifier: GPL-2.0-or-later */
| /*
| * AES modes (ECB/CBC/CTR/XTS) for PPC AES implementation
| *
| * Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de>
| */
|
| #include <asm/ppc_asm.h>
| #include "aes-spe-regs.h"
|
| #ifdef __BIG_ENDIAN__ /* Macros for big endian builds */
|
| #define LOAD_DATA(reg, off) \
| lwz reg,off(rSP); /* load with offset */
| #define SAVE_DATA(reg, off) \
| stw reg,off(rDP); /* save with offset */
| #define NEXT_BLOCK \
| addi rSP,rSP,16; /* increment pointers per bloc */ \
| addi rDP,rDP,16;
| #define LOAD_IV(reg, off) \
| lwz reg,off(rIP); /* IV loading with offset */
| #define SAVE_IV(reg, off) \
| stw reg,off(rIP); /* IV saving with offset */
| #define START_IV /* nothing to reset */
| #define CBC_DEC 16 /* CBC decrement per block */
| #define CTR_DEC 1 /* CTR decrement one byte */
|
| #else /* Macros for little endian */
|
| #define LOAD_DATA(reg, off) \
| lwbrx reg,0,rSP; /* load reversed */ \
| addi rSP,rSP,4; /* and increment pointer */
| #define SAVE_DATA(reg, off) \
| stwbrx reg,0,rDP; /* save reversed */ \
| addi rDP,rDP,4; /* and increment pointer */
| #define NEXT_BLOCK /* nothing todo */
| #define LOAD_IV(reg, off) \
| lwbrx reg,0,rIP; /* load reversed */ \
| addi rIP,rIP,4; /* and increment pointer */
| #define SAVE_IV(reg, off) \
| stwbrx reg,0,rIP; /* load reversed */ \
| addi rIP,rIP,4; /* and increment pointer */
| #define START_IV \
| subi rIP,rIP,16; /* must reset pointer */
| #define CBC_DEC 32 /* 2 blocks because of incs */
| #define CTR_DEC 17 /* 1 block because of incs */
|
| #endif
|
| #define SAVE_0_REGS
| #define LOAD_0_REGS
|
| #define SAVE_4_REGS \
| stw rI0,96(r1); /* save 32 bit registers */ \
| stw rI1,100(r1); \
| stw rI2,104(r1); \
| stw rI3,108(r1);
|
| #define LOAD_4_REGS \
| lwz rI0,96(r1); /* restore 32 bit registers */ \
| lwz rI1,100(r1); \
| lwz rI2,104(r1); \
| lwz rI3,108(r1);
|
| #define SAVE_8_REGS \
| SAVE_4_REGS \
| stw rG0,112(r1); /* save 32 bit registers */ \
| stw rG1,116(r1); \
| stw rG2,120(r1); \
| stw rG3,124(r1);
|
| #define LOAD_8_REGS \
| LOAD_4_REGS \
| lwz rG0,112(r1); /* restore 32 bit registers */ \
| lwz rG1,116(r1); \
| lwz rG2,120(r1); \
| lwz rG3,124(r1);
|
| #define INITIALIZE_CRYPT(tab,nr32bitregs) \
| mflr r0; \
| stwu r1,-160(r1); /* create stack frame */ \
| lis rT0,tab@h; /* en-/decryption table pointer */ \
| stw r0,8(r1); /* save link register */ \
| ori rT0,rT0,tab@l; \
| evstdw r14,16(r1); \
| mr rKS,rKP; \
| evstdw r15,24(r1); /* We must save non volatile */ \
| evstdw r16,32(r1); /* registers. Take the chance */ \
| evstdw r17,40(r1); /* and save the SPE part too */ \
| evstdw r18,48(r1); \
| evstdw r19,56(r1); \
| evstdw r20,64(r1); \
| evstdw r21,72(r1); \
| evstdw r22,80(r1); \
| evstdw r23,88(r1); \
| SAVE_##nr32bitregs##_REGS
|
| #define FINALIZE_CRYPT(nr32bitregs) \
| lwz r0,8(r1); \
| evldw r14,16(r1); /* restore SPE registers */ \
| evldw r15,24(r1); \
| evldw r16,32(r1); \
| evldw r17,40(r1); \
| evldw r18,48(r1); \
| evldw r19,56(r1); \
| evldw r20,64(r1); \
| evldw r21,72(r1); \
| evldw r22,80(r1); \
| evldw r23,88(r1); \
| LOAD_##nr32bitregs##_REGS \
| mtlr r0; /* restore link register */ \
| xor r0,r0,r0; \
| stw r0,16(r1); /* delete sensitive data */ \
| stw r0,24(r1); /* that we might have pushed */ \
| stw r0,32(r1); /* from other context that runs */ \
| stw r0,40(r1); /* the same code */ \
| stw r0,48(r1); \
| stw r0,56(r1); \
| stw r0,64(r1); \
| stw r0,72(r1); \
| stw r0,80(r1); \
| stw r0,88(r1); \
| addi r1,r1,160; /* cleanup stack frame */
|
| #define ENDIAN_SWAP(t0, t1, s0, s1) \
| rotrwi t0,s0,8; /* swap endianness for 2 GPRs */ \
| rotrwi t1,s1,8; \
| rlwimi t0,s0,8,8,15; \
| rlwimi t1,s1,8,8,15; \
| rlwimi t0,s0,8,24,31; \
| rlwimi t1,s1,8,24,31;
|
| #define GF128_MUL(d0, d1, d2, d3, t0) \
| li t0,0x87; /* multiplication in GF128 */ \
| cmpwi d3,-1; \
| iselgt t0,0,t0; \
| rlwimi d3,d2,0,0,0; /* propagate "carry" bits */ \
| rotlwi d3,d3,1; \
| rlwimi d2,d1,0,0,0; \
| rotlwi d2,d2,1; \
| rlwimi d1,d0,0,0,0; \
| slwi d0,d0,1; /* shift left 128 bit */ \
| rotlwi d1,d1,1; \
| xor d0,d0,t0;
|
| #define START_KEY(d0, d1, d2, d3) \
| lwz rW0,0(rKP); \
| mtctr rRR; \
| lwz rW1,4(rKP); \
| lwz rW2,8(rKP); \
| lwz rW3,12(rKP); \
| xor rD0,d0,rW0; \
| xor rD1,d1,rW1; \
| xor rD2,d2,rW2; \
| xor rD3,d3,rW3;
|
| /*
| * ppc_encrypt_aes(u8 *out, const u8 *in, u32 *key_enc,
| * u32 rounds)
| *
| * called from glue layer to encrypt a single 16 byte block
| * round values are AES128 = 4, AES192 = 5, AES256 = 6
| *
| */
| _GLOBAL(ppc_encrypt_aes)
| INITIALIZE_CRYPT(PPC_AES_4K_ENCTAB, 0)
| LOAD_DATA(rD0, 0)
| LOAD_DATA(rD1, 4)
| LOAD_DATA(rD2, 8)
| LOAD_DATA(rD3, 12)
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_encrypt_block
| xor rD0,rD0,rW0
| SAVE_DATA(rD0, 0)
| xor rD1,rD1,rW1
| SAVE_DATA(rD1, 4)
| xor rD2,rD2,rW2
| SAVE_DATA(rD2, 8)
| xor rD3,rD3,rW3
| SAVE_DATA(rD3, 12)
| FINALIZE_CRYPT(0)
| blr
|
| /*
| * ppc_decrypt_aes(u8 *out, const u8 *in, u32 *key_dec,
| * u32 rounds)
| *
| * called from glue layer to decrypt a single 16 byte block
| * round values are AES128 = 4, AES192 = 5, AES256 = 6
| *
| */
| _GLOBAL(ppc_decrypt_aes)
| INITIALIZE_CRYPT(PPC_AES_4K_DECTAB,0)
| LOAD_DATA(rD0, 0)
| addi rT1,rT0,4096
| LOAD_DATA(rD1, 4)
| LOAD_DATA(rD2, 8)
| LOAD_DATA(rD3, 12)
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_decrypt_block
| xor rD0,rD0,rW0
| SAVE_DATA(rD0, 0)
| xor rD1,rD1,rW1
| SAVE_DATA(rD1, 4)
| xor rD2,rD2,rW2
| SAVE_DATA(rD2, 8)
| xor rD3,rD3,rW3
| SAVE_DATA(rD3, 12)
| FINALIZE_CRYPT(0)
| blr
|
| /*
| * ppc_encrypt_ecb(u8 *out, const u8 *in, u32 *key_enc,
| * u32 rounds, u32 bytes);
| *
| * called from glue layer to encrypt multiple blocks via ECB
| * Bytes must be larger or equal 16 and only whole blocks are
| * processed. round values are AES128 = 4, AES192 = 5 and
| * AES256 = 6
| *
| */
| _GLOBAL(ppc_encrypt_ecb)
| INITIALIZE_CRYPT(PPC_AES_4K_ENCTAB, 0)
| ppc_encrypt_ecb_loop:
| LOAD_DATA(rD0, 0)
| mr rKP,rKS
| LOAD_DATA(rD1, 4)
| subi rLN,rLN,16
| LOAD_DATA(rD2, 8)
| cmpwi rLN,15
| LOAD_DATA(rD3, 12)
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_encrypt_block
| xor rD0,rD0,rW0
| SAVE_DATA(rD0, 0)
| xor rD1,rD1,rW1
| SAVE_DATA(rD1, 4)
| xor rD2,rD2,rW2
| SAVE_DATA(rD2, 8)
| xor rD3,rD3,rW3
| SAVE_DATA(rD3, 12)
| NEXT_BLOCK
| bt gt,ppc_encrypt_ecb_loop
| FINALIZE_CRYPT(0)
| blr
|
| /*
| * ppc_decrypt_ecb(u8 *out, const u8 *in, u32 *key_dec,
| * u32 rounds, u32 bytes);
| *
| * called from glue layer to decrypt multiple blocks via ECB
| * Bytes must be larger or equal 16 and only whole blocks are
| * processed. round values are AES128 = 4, AES192 = 5 and
| * AES256 = 6
| *
| */
| _GLOBAL(ppc_decrypt_ecb)
| INITIALIZE_CRYPT(PPC_AES_4K_DECTAB, 0)
| addi rT1,rT0,4096
| ppc_decrypt_ecb_loop:
| LOAD_DATA(rD0, 0)
| mr rKP,rKS
| LOAD_DATA(rD1, 4)
| subi rLN,rLN,16
| LOAD_DATA(rD2, 8)
| cmpwi rLN,15
| LOAD_DATA(rD3, 12)
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_decrypt_block
| xor rD0,rD0,rW0
| SAVE_DATA(rD0, 0)
| xor rD1,rD1,rW1
| SAVE_DATA(rD1, 4)
| xor rD2,rD2,rW2
| SAVE_DATA(rD2, 8)
| xor rD3,rD3,rW3
| SAVE_DATA(rD3, 12)
| NEXT_BLOCK
| bt gt,ppc_decrypt_ecb_loop
| FINALIZE_CRYPT(0)
| blr
|
| /*
| * ppc_encrypt_cbc(u8 *out, const u8 *in, u32 *key_enc,
| * 32 rounds, u32 bytes, u8 *iv);
| *
| * called from glue layer to encrypt multiple blocks via CBC
| * Bytes must be larger or equal 16 and only whole blocks are
| * processed. round values are AES128 = 4, AES192 = 5 and
| * AES256 = 6
| *
| */
| _GLOBAL(ppc_encrypt_cbc)
| INITIALIZE_CRYPT(PPC_AES_4K_ENCTAB, 4)
| LOAD_IV(rI0, 0)
| LOAD_IV(rI1, 4)
| LOAD_IV(rI2, 8)
| LOAD_IV(rI3, 12)
| ppc_encrypt_cbc_loop:
| LOAD_DATA(rD0, 0)
| mr rKP,rKS
| LOAD_DATA(rD1, 4)
| subi rLN,rLN,16
| LOAD_DATA(rD2, 8)
| cmpwi rLN,15
| LOAD_DATA(rD3, 12)
| xor rD0,rD0,rI0
| xor rD1,rD1,rI1
| xor rD2,rD2,rI2
| xor rD3,rD3,rI3
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_encrypt_block
| xor rI0,rD0,rW0
| SAVE_DATA(rI0, 0)
| xor rI1,rD1,rW1
| SAVE_DATA(rI1, 4)
| xor rI2,rD2,rW2
| SAVE_DATA(rI2, 8)
| xor rI3,rD3,rW3
| SAVE_DATA(rI3, 12)
| NEXT_BLOCK
| bt gt,ppc_encrypt_cbc_loop
| START_IV
| SAVE_IV(rI0, 0)
| SAVE_IV(rI1, 4)
| SAVE_IV(rI2, 8)
| SAVE_IV(rI3, 12)
| FINALIZE_CRYPT(4)
| blr
|
| /*
| * ppc_decrypt_cbc(u8 *out, const u8 *in, u32 *key_dec,
| * u32 rounds, u32 bytes, u8 *iv);
| *
| * called from glue layer to decrypt multiple blocks via CBC
| * round values are AES128 = 4, AES192 = 5, AES256 = 6
| *
| */
| _GLOBAL(ppc_decrypt_cbc)
| INITIALIZE_CRYPT(PPC_AES_4K_DECTAB, 4)
| li rT1,15
| LOAD_IV(rI0, 0)
| andc rLN,rLN,rT1
| LOAD_IV(rI1, 4)
| subi rLN,rLN,16
| LOAD_IV(rI2, 8)
| add rSP,rSP,rLN /* reverse processing */
| LOAD_IV(rI3, 12)
| add rDP,rDP,rLN
| LOAD_DATA(rD0, 0)
| addi rT1,rT0,4096
| LOAD_DATA(rD1, 4)
| LOAD_DATA(rD2, 8)
| LOAD_DATA(rD3, 12)
| START_IV
| SAVE_IV(rD0, 0)
| SAVE_IV(rD1, 4)
| SAVE_IV(rD2, 8)
| cmpwi rLN,16
| SAVE_IV(rD3, 12)
| bt lt,ppc_decrypt_cbc_end
| ppc_decrypt_cbc_loop:
| mr rKP,rKS
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_decrypt_block
| subi rLN,rLN,16
| subi rSP,rSP,CBC_DEC
| xor rW0,rD0,rW0
| LOAD_DATA(rD0, 0)
| xor rW1,rD1,rW1
| LOAD_DATA(rD1, 4)
| xor rW2,rD2,rW2
| LOAD_DATA(rD2, 8)
| xor rW3,rD3,rW3
| LOAD_DATA(rD3, 12)
| xor rW0,rW0,rD0
| SAVE_DATA(rW0, 0)
| xor rW1,rW1,rD1
| SAVE_DATA(rW1, 4)
| xor rW2,rW2,rD2
| SAVE_DATA(rW2, 8)
| xor rW3,rW3,rD3
| SAVE_DATA(rW3, 12)
| cmpwi rLN,15
| subi rDP,rDP,CBC_DEC
| bt gt,ppc_decrypt_cbc_loop
| ppc_decrypt_cbc_end:
| mr rKP,rKS
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_decrypt_block
| xor rW0,rW0,rD0
| xor rW1,rW1,rD1
| xor rW2,rW2,rD2
| xor rW3,rW3,rD3
| xor rW0,rW0,rI0 /* decrypt with initial IV */
| SAVE_DATA(rW0, 0)
| xor rW1,rW1,rI1
| SAVE_DATA(rW1, 4)
| xor rW2,rW2,rI2
| SAVE_DATA(rW2, 8)
| xor rW3,rW3,rI3
| SAVE_DATA(rW3, 12)
| FINALIZE_CRYPT(4)
| blr
|
| /*
| * ppc_crypt_ctr(u8 *out, const u8 *in, u32 *key_enc,
| * u32 rounds, u32 bytes, u8 *iv);
| *
| * called from glue layer to encrypt/decrypt multiple blocks
| * via CTR. Number of bytes does not need to be a multiple of
| * 16. Round values are AES128 = 4, AES192 = 5, AES256 = 6
| *
| */
| _GLOBAL(ppc_crypt_ctr)
| INITIALIZE_CRYPT(PPC_AES_4K_ENCTAB, 4)
| LOAD_IV(rI0, 0)
| LOAD_IV(rI1, 4)
| LOAD_IV(rI2, 8)
| cmpwi rLN,16
| LOAD_IV(rI3, 12)
| START_IV
| bt lt,ppc_crypt_ctr_partial
| ppc_crypt_ctr_loop:
| mr rKP,rKS
| START_KEY(rI0, rI1, rI2, rI3)
| bl ppc_encrypt_block
| xor rW0,rD0,rW0
| xor rW1,rD1,rW1
| xor rW2,rD2,rW2
| xor rW3,rD3,rW3
| LOAD_DATA(rD0, 0)
| subi rLN,rLN,16
| LOAD_DATA(rD1, 4)
| LOAD_DATA(rD2, 8)
| LOAD_DATA(rD3, 12)
| xor rD0,rD0,rW0
| SAVE_DATA(rD0, 0)
| xor rD1,rD1,rW1
| SAVE_DATA(rD1, 4)
| xor rD2,rD2,rW2
| SAVE_DATA(rD2, 8)
| xor rD3,rD3,rW3
| SAVE_DATA(rD3, 12)
| addic rI3,rI3,1 /* increase counter */
| addze rI2,rI2
| addze rI1,rI1
| addze rI0,rI0
| NEXT_BLOCK
| cmpwi rLN,15
| bt gt,ppc_crypt_ctr_loop
| ppc_crypt_ctr_partial:
| cmpwi rLN,0
| bt eq,ppc_crypt_ctr_end
| mr rKP,rKS
| START_KEY(rI0, rI1, rI2, rI3)
| bl ppc_encrypt_block
| xor rW0,rD0,rW0
| SAVE_IV(rW0, 0)
| xor rW1,rD1,rW1
| SAVE_IV(rW1, 4)
| xor rW2,rD2,rW2
| SAVE_IV(rW2, 8)
| xor rW3,rD3,rW3
| SAVE_IV(rW3, 12)
| mtctr rLN
| subi rIP,rIP,CTR_DEC
| subi rSP,rSP,1
| subi rDP,rDP,1
| ppc_crypt_ctr_xorbyte:
| lbzu rW4,1(rIP) /* bytewise xor for partial block */
| lbzu rW5,1(rSP)
| xor rW4,rW4,rW5
| stbu rW4,1(rDP)
| bdnz ppc_crypt_ctr_xorbyte
| subf rIP,rLN,rIP
| addi rIP,rIP,1
| addic rI3,rI3,1
| addze rI2,rI2
| addze rI1,rI1
| addze rI0,rI0
| ppc_crypt_ctr_end:
| SAVE_IV(rI0, 0)
| SAVE_IV(rI1, 4)
| SAVE_IV(rI2, 8)
| SAVE_IV(rI3, 12)
| FINALIZE_CRYPT(4)
| blr
|
| /*
| * ppc_encrypt_xts(u8 *out, const u8 *in, u32 *key_enc,
| * u32 rounds, u32 bytes, u8 *iv, u32 *key_twk);
| *
| * called from glue layer to encrypt multiple blocks via XTS
| * If key_twk is given, the initial IV encryption will be
| * processed too. Round values are AES128 = 4, AES192 = 5,
| * AES256 = 6
| *
| */
| _GLOBAL(ppc_encrypt_xts)
| INITIALIZE_CRYPT(PPC_AES_4K_ENCTAB, 8)
| LOAD_IV(rI0, 0)
| LOAD_IV(rI1, 4)
| LOAD_IV(rI2, 8)
| cmpwi rKT,0
| LOAD_IV(rI3, 12)
| bt eq,ppc_encrypt_xts_notweak
| mr rKP,rKT
| START_KEY(rI0, rI1, rI2, rI3)
| bl ppc_encrypt_block
| xor rI0,rD0,rW0
| xor rI1,rD1,rW1
| xor rI2,rD2,rW2
| xor rI3,rD3,rW3
| ppc_encrypt_xts_notweak:
| ENDIAN_SWAP(rG0, rG1, rI0, rI1)
| ENDIAN_SWAP(rG2, rG3, rI2, rI3)
| ppc_encrypt_xts_loop:
| LOAD_DATA(rD0, 0)
| mr rKP,rKS
| LOAD_DATA(rD1, 4)
| subi rLN,rLN,16
| LOAD_DATA(rD2, 8)
| LOAD_DATA(rD3, 12)
| xor rD0,rD0,rI0
| xor rD1,rD1,rI1
| xor rD2,rD2,rI2
| xor rD3,rD3,rI3
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_encrypt_block
| xor rD0,rD0,rW0
| xor rD1,rD1,rW1
| xor rD2,rD2,rW2
| xor rD3,rD3,rW3
| xor rD0,rD0,rI0
| SAVE_DATA(rD0, 0)
| xor rD1,rD1,rI1
| SAVE_DATA(rD1, 4)
| xor rD2,rD2,rI2
| SAVE_DATA(rD2, 8)
| xor rD3,rD3,rI3
| SAVE_DATA(rD3, 12)
| GF128_MUL(rG0, rG1, rG2, rG3, rW0)
| ENDIAN_SWAP(rI0, rI1, rG0, rG1)
| ENDIAN_SWAP(rI2, rI3, rG2, rG3)
| cmpwi rLN,0
| NEXT_BLOCK
| bt gt,ppc_encrypt_xts_loop
| START_IV
| SAVE_IV(rI0, 0)
| SAVE_IV(rI1, 4)
| SAVE_IV(rI2, 8)
| SAVE_IV(rI3, 12)
| FINALIZE_CRYPT(8)
| blr
|
| /*
| * ppc_decrypt_xts(u8 *out, const u8 *in, u32 *key_dec,
| * u32 rounds, u32 blocks, u8 *iv, u32 *key_twk);
| *
| * called from glue layer to decrypt multiple blocks via XTS
| * If key_twk is given, the initial IV encryption will be
| * processed too. Round values are AES128 = 4, AES192 = 5,
| * AES256 = 6
| *
| */
| _GLOBAL(ppc_decrypt_xts)
| INITIALIZE_CRYPT(PPC_AES_4K_DECTAB, 8)
| LOAD_IV(rI0, 0)
| addi rT1,rT0,4096
| LOAD_IV(rI1, 4)
| LOAD_IV(rI2, 8)
| cmpwi rKT,0
| LOAD_IV(rI3, 12)
| bt eq,ppc_decrypt_xts_notweak
| subi rT0,rT0,4096
| mr rKP,rKT
| START_KEY(rI0, rI1, rI2, rI3)
| bl ppc_encrypt_block
| xor rI0,rD0,rW0
| xor rI1,rD1,rW1
| xor rI2,rD2,rW2
| xor rI3,rD3,rW3
| addi rT0,rT0,4096
| ppc_decrypt_xts_notweak:
| ENDIAN_SWAP(rG0, rG1, rI0, rI1)
| ENDIAN_SWAP(rG2, rG3, rI2, rI3)
| ppc_decrypt_xts_loop:
| LOAD_DATA(rD0, 0)
| mr rKP,rKS
| LOAD_DATA(rD1, 4)
| subi rLN,rLN,16
| LOAD_DATA(rD2, 8)
| LOAD_DATA(rD3, 12)
| xor rD0,rD0,rI0
| xor rD1,rD1,rI1
| xor rD2,rD2,rI2
| xor rD3,rD3,rI3
| START_KEY(rD0, rD1, rD2, rD3)
| bl ppc_decrypt_block
| xor rD0,rD0,rW0
| xor rD1,rD1,rW1
| xor rD2,rD2,rW2
| xor rD3,rD3,rW3
| xor rD0,rD0,rI0
| SAVE_DATA(rD0, 0)
| xor rD1,rD1,rI1
| SAVE_DATA(rD1, 4)
| xor rD2,rD2,rI2
| SAVE_DATA(rD2, 8)
| xor rD3,rD3,rI3
| SAVE_DATA(rD3, 12)
| GF128_MUL(rG0, rG1, rG2, rG3, rW0)
| ENDIAN_SWAP(rI0, rI1, rG0, rG1)
| ENDIAN_SWAP(rI2, rI3, rG2, rG3)
| cmpwi rLN,0
| NEXT_BLOCK
| bt gt,ppc_decrypt_xts_loop
| START_IV
| SAVE_IV(rI0, 0)
| SAVE_IV(rI1, 4)
| SAVE_IV(rI2, 8)
| SAVE_IV(rI3, 12)
| FINALIZE_CRYPT(8)
| blr
|
|
