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Diffstat (limited to 'test/monniaux/BearSSL/src/symcipher/aes_pwr8_cbcdec.c')
-rw-r--r--test/monniaux/BearSSL/src/symcipher/aes_pwr8_cbcdec.c670
1 files changed, 670 insertions, 0 deletions
diff --git a/test/monniaux/BearSSL/src/symcipher/aes_pwr8_cbcdec.c b/test/monniaux/BearSSL/src/symcipher/aes_pwr8_cbcdec.c
new file mode 100644
index 00000000..e535ba6f
--- /dev/null
+++ b/test/monniaux/BearSSL/src/symcipher/aes_pwr8_cbcdec.c
@@ -0,0 +1,670 @@
+/*
+ * Copyright (c) 2017 Thomas Pornin <pornin@bolet.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#define BR_POWER_ASM_MACROS 1
+#include "inner.h"
+
+#if BR_POWER8
+
+/* see bearssl_block.h */
+void
+br_aes_pwr8_cbcdec_init(br_aes_pwr8_cbcdec_keys *ctx,
+ const void *key, size_t len)
+{
+ ctx->vtable = &br_aes_pwr8_cbcdec_vtable;
+ ctx->num_rounds = br_aes_pwr8_keysched(ctx->skey.skni, key, len);
+}
+
+static void
+cbcdec_128(const unsigned char *sk,
+ const unsigned char *iv, unsigned char *buf, size_t num_blocks)
+{
+ long cc0, cc1, cc2, cc3;
+
+#if BR_POWER8_LE
+ static const uint32_t idx2be[] = {
+ 0x03020100, 0x07060504, 0x0B0A0908, 0x0F0E0D0C
+ };
+#endif
+
+ cc0 = 0;
+ cc1 = 16;
+ cc2 = 32;
+ cc3 = 48;
+ asm volatile (
+
+ /*
+ * Load subkeys into v0..v10
+ */
+ lxvw4x(32, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(33, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(34, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(35, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(36, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(37, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(38, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(39, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(40, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(41, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(42, %[cc0], %[sk])
+ li(%[cc0], 0)
+
+#if BR_POWER8_LE
+ /*
+ * v15 = constant for byteswapping words
+ */
+ lxvw4x(47, 0, %[idx2be])
+#endif
+ /*
+ * Load IV into v24.
+ */
+ lxvw4x(56, 0, %[iv])
+#if BR_POWER8_LE
+ vperm(24, 24, 24, 15)
+#endif
+
+ mtctr(%[num_blocks])
+ label(loop)
+ /*
+ * Load next ciphertext words in v16..v19. Also save them
+ * in v20..v23.
+ */
+ lxvw4x(48, %[cc0], %[buf])
+ lxvw4x(49, %[cc1], %[buf])
+ lxvw4x(50, %[cc2], %[buf])
+ lxvw4x(51, %[cc3], %[buf])
+#if BR_POWER8_LE
+ vperm(16, 16, 16, 15)
+ vperm(17, 17, 17, 15)
+ vperm(18, 18, 18, 15)
+ vperm(19, 19, 19, 15)
+#endif
+ vand(20, 16, 16)
+ vand(21, 17, 17)
+ vand(22, 18, 18)
+ vand(23, 19, 19)
+
+ /*
+ * Decrypt the blocks.
+ */
+ vxor(16, 16, 10)
+ vxor(17, 17, 10)
+ vxor(18, 18, 10)
+ vxor(19, 19, 10)
+ vncipher(16, 16, 9)
+ vncipher(17, 17, 9)
+ vncipher(18, 18, 9)
+ vncipher(19, 19, 9)
+ vncipher(16, 16, 8)
+ vncipher(17, 17, 8)
+ vncipher(18, 18, 8)
+ vncipher(19, 19, 8)
+ vncipher(16, 16, 7)
+ vncipher(17, 17, 7)
+ vncipher(18, 18, 7)
+ vncipher(19, 19, 7)
+ vncipher(16, 16, 6)
+ vncipher(17, 17, 6)
+ vncipher(18, 18, 6)
+ vncipher(19, 19, 6)
+ vncipher(16, 16, 5)
+ vncipher(17, 17, 5)
+ vncipher(18, 18, 5)
+ vncipher(19, 19, 5)
+ vncipher(16, 16, 4)
+ vncipher(17, 17, 4)
+ vncipher(18, 18, 4)
+ vncipher(19, 19, 4)
+ vncipher(16, 16, 3)
+ vncipher(17, 17, 3)
+ vncipher(18, 18, 3)
+ vncipher(19, 19, 3)
+ vncipher(16, 16, 2)
+ vncipher(17, 17, 2)
+ vncipher(18, 18, 2)
+ vncipher(19, 19, 2)
+ vncipher(16, 16, 1)
+ vncipher(17, 17, 1)
+ vncipher(18, 18, 1)
+ vncipher(19, 19, 1)
+ vncipherlast(16, 16, 0)
+ vncipherlast(17, 17, 0)
+ vncipherlast(18, 18, 0)
+ vncipherlast(19, 19, 0)
+
+ /*
+ * XOR decrypted blocks with IV / previous block.
+ */
+ vxor(16, 16, 24)
+ vxor(17, 17, 20)
+ vxor(18, 18, 21)
+ vxor(19, 19, 22)
+
+ /*
+ * Store back result (with byteswap)
+ */
+#if BR_POWER8_LE
+ vperm(16, 16, 16, 15)
+ vperm(17, 17, 17, 15)
+ vperm(18, 18, 18, 15)
+ vperm(19, 19, 19, 15)
+#endif
+ stxvw4x(48, %[cc0], %[buf])
+ stxvw4x(49, %[cc1], %[buf])
+ stxvw4x(50, %[cc2], %[buf])
+ stxvw4x(51, %[cc3], %[buf])
+
+ /*
+ * Fourth encrypted block is IV for next run.
+ */
+ vand(24, 23, 23)
+
+ addi(%[buf], %[buf], 64)
+
+ bdnz(loop)
+
+: [cc0] "+b" (cc0), [cc1] "+b" (cc1), [cc2] "+b" (cc2), [cc3] "+b" (cc3),
+ [buf] "+b" (buf)
+: [sk] "b" (sk), [iv] "b" (iv), [num_blocks] "b" (num_blocks >> 2)
+#if BR_POWER8_LE
+ , [idx2be] "b" (idx2be)
+#endif
+: "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9",
+ "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18", "v19",
+ "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29",
+ "ctr", "memory"
+ );
+}
+
+static void
+cbcdec_192(const unsigned char *sk,
+ const unsigned char *iv, unsigned char *buf, size_t num_blocks)
+{
+ long cc0, cc1, cc2, cc3;
+
+#if BR_POWER8_LE
+ static const uint32_t idx2be[] = {
+ 0x03020100, 0x07060504, 0x0B0A0908, 0x0F0E0D0C
+ };
+#endif
+
+ cc0 = 0;
+ cc1 = 16;
+ cc2 = 32;
+ cc3 = 48;
+ asm volatile (
+
+ /*
+ * Load subkeys into v0..v12
+ */
+ lxvw4x(32, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(33, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(34, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(35, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(36, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(37, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(38, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(39, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(40, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(41, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(42, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(43, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(44, %[cc0], %[sk])
+ li(%[cc0], 0)
+
+#if BR_POWER8_LE
+ /*
+ * v15 = constant for byteswapping words
+ */
+ lxvw4x(47, 0, %[idx2be])
+#endif
+ /*
+ * Load IV into v24.
+ */
+ lxvw4x(56, 0, %[iv])
+#if BR_POWER8_LE
+ vperm(24, 24, 24, 15)
+#endif
+
+ mtctr(%[num_blocks])
+ label(loop)
+ /*
+ * Load next ciphertext words in v16..v19. Also save them
+ * in v20..v23.
+ */
+ lxvw4x(48, %[cc0], %[buf])
+ lxvw4x(49, %[cc1], %[buf])
+ lxvw4x(50, %[cc2], %[buf])
+ lxvw4x(51, %[cc3], %[buf])
+#if BR_POWER8_LE
+ vperm(16, 16, 16, 15)
+ vperm(17, 17, 17, 15)
+ vperm(18, 18, 18, 15)
+ vperm(19, 19, 19, 15)
+#endif
+ vand(20, 16, 16)
+ vand(21, 17, 17)
+ vand(22, 18, 18)
+ vand(23, 19, 19)
+
+ /*
+ * Decrypt the blocks.
+ */
+ vxor(16, 16, 12)
+ vxor(17, 17, 12)
+ vxor(18, 18, 12)
+ vxor(19, 19, 12)
+ vncipher(16, 16, 11)
+ vncipher(17, 17, 11)
+ vncipher(18, 18, 11)
+ vncipher(19, 19, 11)
+ vncipher(16, 16, 10)
+ vncipher(17, 17, 10)
+ vncipher(18, 18, 10)
+ vncipher(19, 19, 10)
+ vncipher(16, 16, 9)
+ vncipher(17, 17, 9)
+ vncipher(18, 18, 9)
+ vncipher(19, 19, 9)
+ vncipher(16, 16, 8)
+ vncipher(17, 17, 8)
+ vncipher(18, 18, 8)
+ vncipher(19, 19, 8)
+ vncipher(16, 16, 7)
+ vncipher(17, 17, 7)
+ vncipher(18, 18, 7)
+ vncipher(19, 19, 7)
+ vncipher(16, 16, 6)
+ vncipher(17, 17, 6)
+ vncipher(18, 18, 6)
+ vncipher(19, 19, 6)
+ vncipher(16, 16, 5)
+ vncipher(17, 17, 5)
+ vncipher(18, 18, 5)
+ vncipher(19, 19, 5)
+ vncipher(16, 16, 4)
+ vncipher(17, 17, 4)
+ vncipher(18, 18, 4)
+ vncipher(19, 19, 4)
+ vncipher(16, 16, 3)
+ vncipher(17, 17, 3)
+ vncipher(18, 18, 3)
+ vncipher(19, 19, 3)
+ vncipher(16, 16, 2)
+ vncipher(17, 17, 2)
+ vncipher(18, 18, 2)
+ vncipher(19, 19, 2)
+ vncipher(16, 16, 1)
+ vncipher(17, 17, 1)
+ vncipher(18, 18, 1)
+ vncipher(19, 19, 1)
+ vncipherlast(16, 16, 0)
+ vncipherlast(17, 17, 0)
+ vncipherlast(18, 18, 0)
+ vncipherlast(19, 19, 0)
+
+ /*
+ * XOR decrypted blocks with IV / previous block.
+ */
+ vxor(16, 16, 24)
+ vxor(17, 17, 20)
+ vxor(18, 18, 21)
+ vxor(19, 19, 22)
+
+ /*
+ * Store back result (with byteswap)
+ */
+#if BR_POWER8_LE
+ vperm(16, 16, 16, 15)
+ vperm(17, 17, 17, 15)
+ vperm(18, 18, 18, 15)
+ vperm(19, 19, 19, 15)
+#endif
+ stxvw4x(48, %[cc0], %[buf])
+ stxvw4x(49, %[cc1], %[buf])
+ stxvw4x(50, %[cc2], %[buf])
+ stxvw4x(51, %[cc3], %[buf])
+
+ /*
+ * Fourth encrypted block is IV for next run.
+ */
+ vand(24, 23, 23)
+
+ addi(%[buf], %[buf], 64)
+
+ bdnz(loop)
+
+: [cc0] "+b" (cc0), [cc1] "+b" (cc1), [cc2] "+b" (cc2), [cc3] "+b" (cc3),
+ [buf] "+b" (buf)
+: [sk] "b" (sk), [iv] "b" (iv), [num_blocks] "b" (num_blocks >> 2)
+#if BR_POWER8_LE
+ , [idx2be] "b" (idx2be)
+#endif
+: "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9",
+ "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18", "v19",
+ "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29",
+ "ctr", "memory"
+ );
+}
+
+static void
+cbcdec_256(const unsigned char *sk,
+ const unsigned char *iv, unsigned char *buf, size_t num_blocks)
+{
+ long cc0, cc1, cc2, cc3;
+
+#if BR_POWER8_LE
+ static const uint32_t idx2be[] = {
+ 0x03020100, 0x07060504, 0x0B0A0908, 0x0F0E0D0C
+ };
+#endif
+
+ cc0 = 0;
+ cc1 = 16;
+ cc2 = 32;
+ cc3 = 48;
+ asm volatile (
+
+ /*
+ * Load subkeys into v0..v14
+ */
+ lxvw4x(32, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(33, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(34, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(35, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(36, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(37, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(38, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(39, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(40, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(41, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(42, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(43, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(44, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(45, %[cc0], %[sk])
+ addi(%[cc0], %[cc0], 16)
+ lxvw4x(46, %[cc0], %[sk])
+ li(%[cc0], 0)
+
+#if BR_POWER8_LE
+ /*
+ * v15 = constant for byteswapping words
+ */
+ lxvw4x(47, 0, %[idx2be])
+#endif
+ /*
+ * Load IV into v24.
+ */
+ lxvw4x(56, 0, %[iv])
+#if BR_POWER8_LE
+ vperm(24, 24, 24, 15)
+#endif
+
+ mtctr(%[num_blocks])
+ label(loop)
+ /*
+ * Load next ciphertext words in v16..v19. Also save them
+ * in v20..v23.
+ */
+ lxvw4x(48, %[cc0], %[buf])
+ lxvw4x(49, %[cc1], %[buf])
+ lxvw4x(50, %[cc2], %[buf])
+ lxvw4x(51, %[cc3], %[buf])
+#if BR_POWER8_LE
+ vperm(16, 16, 16, 15)
+ vperm(17, 17, 17, 15)
+ vperm(18, 18, 18, 15)
+ vperm(19, 19, 19, 15)
+#endif
+ vand(20, 16, 16)
+ vand(21, 17, 17)
+ vand(22, 18, 18)
+ vand(23, 19, 19)
+
+ /*
+ * Decrypt the blocks.
+ */
+ vxor(16, 16, 14)
+ vxor(17, 17, 14)
+ vxor(18, 18, 14)
+ vxor(19, 19, 14)
+ vncipher(16, 16, 13)
+ vncipher(17, 17, 13)
+ vncipher(18, 18, 13)
+ vncipher(19, 19, 13)
+ vncipher(16, 16, 12)
+ vncipher(17, 17, 12)
+ vncipher(18, 18, 12)
+ vncipher(19, 19, 12)
+ vncipher(16, 16, 11)
+ vncipher(17, 17, 11)
+ vncipher(18, 18, 11)
+ vncipher(19, 19, 11)
+ vncipher(16, 16, 10)
+ vncipher(17, 17, 10)
+ vncipher(18, 18, 10)
+ vncipher(19, 19, 10)
+ vncipher(16, 16, 9)
+ vncipher(17, 17, 9)
+ vncipher(18, 18, 9)
+ vncipher(19, 19, 9)
+ vncipher(16, 16, 8)
+ vncipher(17, 17, 8)
+ vncipher(18, 18, 8)
+ vncipher(19, 19, 8)
+ vncipher(16, 16, 7)
+ vncipher(17, 17, 7)
+ vncipher(18, 18, 7)
+ vncipher(19, 19, 7)
+ vncipher(16, 16, 6)
+ vncipher(17, 17, 6)
+ vncipher(18, 18, 6)
+ vncipher(19, 19, 6)
+ vncipher(16, 16, 5)
+ vncipher(17, 17, 5)
+ vncipher(18, 18, 5)
+ vncipher(19, 19, 5)
+ vncipher(16, 16, 4)
+ vncipher(17, 17, 4)
+ vncipher(18, 18, 4)
+ vncipher(19, 19, 4)
+ vncipher(16, 16, 3)
+ vncipher(17, 17, 3)
+ vncipher(18, 18, 3)
+ vncipher(19, 19, 3)
+ vncipher(16, 16, 2)
+ vncipher(17, 17, 2)
+ vncipher(18, 18, 2)
+ vncipher(19, 19, 2)
+ vncipher(16, 16, 1)
+ vncipher(17, 17, 1)
+ vncipher(18, 18, 1)
+ vncipher(19, 19, 1)
+ vncipherlast(16, 16, 0)
+ vncipherlast(17, 17, 0)
+ vncipherlast(18, 18, 0)
+ vncipherlast(19, 19, 0)
+
+ /*
+ * XOR decrypted blocks with IV / previous block.
+ */
+ vxor(16, 16, 24)
+ vxor(17, 17, 20)
+ vxor(18, 18, 21)
+ vxor(19, 19, 22)
+
+ /*
+ * Store back result (with byteswap)
+ */
+#if BR_POWER8_LE
+ vperm(16, 16, 16, 15)
+ vperm(17, 17, 17, 15)
+ vperm(18, 18, 18, 15)
+ vperm(19, 19, 19, 15)
+#endif
+ stxvw4x(48, %[cc0], %[buf])
+ stxvw4x(49, %[cc1], %[buf])
+ stxvw4x(50, %[cc2], %[buf])
+ stxvw4x(51, %[cc3], %[buf])
+
+ /*
+ * Fourth encrypted block is IV for next run.
+ */
+ vand(24, 23, 23)
+
+ addi(%[buf], %[buf], 64)
+
+ bdnz(loop)
+
+: [cc0] "+b" (cc0), [cc1] "+b" (cc1), [cc2] "+b" (cc2), [cc3] "+b" (cc3),
+ [buf] "+b" (buf)
+: [sk] "b" (sk), [iv] "b" (iv), [num_blocks] "b" (num_blocks >> 2)
+#if BR_POWER8_LE
+ , [idx2be] "b" (idx2be)
+#endif
+: "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9",
+ "v10", "v11", "v12", "v13", "v14", "v15", "v16", "v17", "v18", "v19",
+ "v20", "v21", "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29",
+ "ctr", "memory"
+ );
+}
+
+/* see bearssl_block.h */
+void
+br_aes_pwr8_cbcdec_run(const br_aes_pwr8_cbcdec_keys *ctx,
+ void *iv, void *data, size_t len)
+{
+ unsigned char nextiv[16];
+ unsigned char *buf;
+
+ if (len == 0) {
+ return;
+ }
+ buf = data;
+ memcpy(nextiv, buf + len - 16, 16);
+ if (len >= 64) {
+ size_t num_blocks;
+ unsigned char tmp[16];
+
+ num_blocks = (len >> 4) & ~(size_t)3;
+ memcpy(tmp, buf + (num_blocks << 4) - 16, 16);
+ switch (ctx->num_rounds) {
+ case 10:
+ cbcdec_128(ctx->skey.skni, iv, buf, num_blocks);
+ break;
+ case 12:
+ cbcdec_192(ctx->skey.skni, iv, buf, num_blocks);
+ break;
+ default:
+ cbcdec_256(ctx->skey.skni, iv, buf, num_blocks);
+ break;
+ }
+ buf += num_blocks << 4;
+ len &= 63;
+ memcpy(iv, tmp, 16);
+ }
+ if (len > 0) {
+ unsigned char tmp[64];
+
+ memcpy(tmp, buf, len);
+ memset(tmp + len, 0, (sizeof tmp) - len);
+ switch (ctx->num_rounds) {
+ case 10:
+ cbcdec_128(ctx->skey.skni, iv, tmp, 4);
+ break;
+ case 12:
+ cbcdec_192(ctx->skey.skni, iv, tmp, 4);
+ break;
+ default:
+ cbcdec_256(ctx->skey.skni, iv, tmp, 4);
+ break;
+ }
+ memcpy(buf, tmp, len);
+ }
+ memcpy(iv, nextiv, 16);
+}
+
+/* see bearssl_block.h */
+const br_block_cbcdec_class br_aes_pwr8_cbcdec_vtable = {
+ sizeof(br_aes_pwr8_cbcdec_keys),
+ 16,
+ 4,
+ (void (*)(const br_block_cbcdec_class **, const void *, size_t))
+ &br_aes_pwr8_cbcdec_init,
+ (void (*)(const br_block_cbcdec_class *const *, void *, void *, size_t))
+ &br_aes_pwr8_cbcdec_run
+};
+
+/* see bearssl_block.h */
+const br_block_cbcdec_class *
+br_aes_pwr8_cbcdec_get_vtable(void)
+{
+ return br_aes_pwr8_supported() ? &br_aes_pwr8_cbcdec_vtable : NULL;
+}
+
+#else
+
+/* see bearssl_block.h */
+const br_block_cbcdec_class *
+br_aes_pwr8_cbcdec_get_vtable(void)
+{
+ return NULL;
+}
+
+#endif