diff --git a/libtomcrypt_VS2008.vcproj b/libtomcrypt_VS2008.vcproj
index 88056e78..666fc5a5 100644
--- a/libtomcrypt_VS2008.vcproj
+++ b/libtomcrypt_VS2008.vcproj
@@ -735,54 +735,6 @@
 					>
 				</File>
 			</Filter>
-			<Filter
-				Name="ocb"
-				>
-				<File
-					RelativePath="src\encauth\ocb\ocb_decrypt.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_decrypt_verify_memory.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_done_decrypt.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_done_encrypt.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_encrypt.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_encrypt_authenticate_memory.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_init.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_ntz.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_shift_xor.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\ocb_test.c"
-					>
-				</File>
-				<File
-					RelativePath="src\encauth\ocb\s_ocb_done.c"
-					>
-				</File>
-			</Filter>
 			<Filter
 				Name="ocb3"
 				>
diff --git a/makefile.mingw b/makefile.mingw
index 6cc7a209..43f26cc3 100644
--- a/makefile.mingw
+++ b/makefile.mingw
@@ -56,10 +56,6 @@ src/encauth/eax/eax_init.o src/encauth/eax/eax_test.o src/encauth/gcm/gcm_add_aa
 src/encauth/gcm/gcm_add_iv.o src/encauth/gcm/gcm_done.o src/encauth/gcm/gcm_gf_mult.o \
 src/encauth/gcm/gcm_init.o src/encauth/gcm/gcm_memory.o src/encauth/gcm/gcm_mult_h.o \
 src/encauth/gcm/gcm_process.o src/encauth/gcm/gcm_reset.o src/encauth/gcm/gcm_test.o \
-src/encauth/ocb/ocb_decrypt.o src/encauth/ocb/ocb_decrypt_verify_memory.o \
-src/encauth/ocb/ocb_done_decrypt.o src/encauth/ocb/ocb_done_encrypt.o src/encauth/ocb/ocb_encrypt.o \
-src/encauth/ocb/ocb_encrypt_authenticate_memory.o src/encauth/ocb/ocb_init.o src/encauth/ocb/ocb_ntz.o \
-src/encauth/ocb/ocb_shift_xor.o src/encauth/ocb/ocb_test.o src/encauth/ocb/s_ocb_done.o \
 src/encauth/ocb3/ocb3_add_aad.o src/encauth/ocb3/ocb3_decrypt.o src/encauth/ocb3/ocb3_decrypt_last.o \
 src/encauth/ocb3/ocb3_decrypt_verify_memory.o src/encauth/ocb3/ocb3_done.o \
 src/encauth/ocb3/ocb3_encrypt.o src/encauth/ocb3/ocb3_encrypt_authenticate_memory.o \
diff --git a/makefile.msvc b/makefile.msvc
index 67082f7c..a9596773 100644
--- a/makefile.msvc
+++ b/makefile.msvc
@@ -49,10 +49,6 @@ src/encauth/eax/eax_init.obj src/encauth/eax/eax_test.obj src/encauth/gcm/gcm_ad
 src/encauth/gcm/gcm_add_iv.obj src/encauth/gcm/gcm_done.obj src/encauth/gcm/gcm_gf_mult.obj \
 src/encauth/gcm/gcm_init.obj src/encauth/gcm/gcm_memory.obj src/encauth/gcm/gcm_mult_h.obj \
 src/encauth/gcm/gcm_process.obj src/encauth/gcm/gcm_reset.obj src/encauth/gcm/gcm_test.obj \
-src/encauth/ocb/ocb_decrypt.obj src/encauth/ocb/ocb_decrypt_verify_memory.obj \
-src/encauth/ocb/ocb_done_decrypt.obj src/encauth/ocb/ocb_done_encrypt.obj src/encauth/ocb/ocb_encrypt.obj \
-src/encauth/ocb/ocb_encrypt_authenticate_memory.obj src/encauth/ocb/ocb_init.obj src/encauth/ocb/ocb_ntz.obj \
-src/encauth/ocb/ocb_shift_xor.obj src/encauth/ocb/ocb_test.obj src/encauth/ocb/s_ocb_done.obj \
 src/encauth/ocb3/ocb3_add_aad.obj src/encauth/ocb3/ocb3_decrypt.obj src/encauth/ocb3/ocb3_decrypt_last.obj \
 src/encauth/ocb3/ocb3_decrypt_verify_memory.obj src/encauth/ocb3/ocb3_done.obj \
 src/encauth/ocb3/ocb3_encrypt.obj src/encauth/ocb3/ocb3_encrypt_authenticate_memory.obj \
diff --git a/makefile.unix b/makefile.unix
index c7c4caa1..b2d163ca 100644
--- a/makefile.unix
+++ b/makefile.unix
@@ -70,10 +70,6 @@ src/encauth/eax/eax_init.o src/encauth/eax/eax_test.o src/encauth/gcm/gcm_add_aa
 src/encauth/gcm/gcm_add_iv.o src/encauth/gcm/gcm_done.o src/encauth/gcm/gcm_gf_mult.o \
 src/encauth/gcm/gcm_init.o src/encauth/gcm/gcm_memory.o src/encauth/gcm/gcm_mult_h.o \
 src/encauth/gcm/gcm_process.o src/encauth/gcm/gcm_reset.o src/encauth/gcm/gcm_test.o \
-src/encauth/ocb/ocb_decrypt.o src/encauth/ocb/ocb_decrypt_verify_memory.o \
-src/encauth/ocb/ocb_done_decrypt.o src/encauth/ocb/ocb_done_encrypt.o src/encauth/ocb/ocb_encrypt.o \
-src/encauth/ocb/ocb_encrypt_authenticate_memory.o src/encauth/ocb/ocb_init.o src/encauth/ocb/ocb_ntz.o \
-src/encauth/ocb/ocb_shift_xor.o src/encauth/ocb/ocb_test.o src/encauth/ocb/s_ocb_done.o \
 src/encauth/ocb3/ocb3_add_aad.o src/encauth/ocb3/ocb3_decrypt.o src/encauth/ocb3/ocb3_decrypt_last.o \
 src/encauth/ocb3/ocb3_decrypt_verify_memory.o src/encauth/ocb3/ocb3_done.o \
 src/encauth/ocb3/ocb3_encrypt.o src/encauth/ocb3/ocb3_encrypt_authenticate_memory.o \
diff --git a/makefile_include.mk b/makefile_include.mk
index ef801450..3389a538 100644
--- a/makefile_include.mk
+++ b/makefile_include.mk
@@ -241,10 +241,6 @@ src/encauth/eax/eax_init.o src/encauth/eax/eax_test.o src/encauth/gcm/gcm_add_aa
 src/encauth/gcm/gcm_add_iv.o src/encauth/gcm/gcm_done.o src/encauth/gcm/gcm_gf_mult.o \
 src/encauth/gcm/gcm_init.o src/encauth/gcm/gcm_memory.o src/encauth/gcm/gcm_mult_h.o \
 src/encauth/gcm/gcm_process.o src/encauth/gcm/gcm_reset.o src/encauth/gcm/gcm_test.o \
-src/encauth/ocb/ocb_decrypt.o src/encauth/ocb/ocb_decrypt_verify_memory.o \
-src/encauth/ocb/ocb_done_decrypt.o src/encauth/ocb/ocb_done_encrypt.o src/encauth/ocb/ocb_encrypt.o \
-src/encauth/ocb/ocb_encrypt_authenticate_memory.o src/encauth/ocb/ocb_init.o src/encauth/ocb/ocb_ntz.o \
-src/encauth/ocb/ocb_shift_xor.o src/encauth/ocb/ocb_test.o src/encauth/ocb/s_ocb_done.o \
 src/encauth/ocb3/ocb3_add_aad.o src/encauth/ocb3/ocb3_decrypt.o src/encauth/ocb3/ocb3_decrypt_last.o \
 src/encauth/ocb3/ocb3_decrypt_verify_memory.o src/encauth/ocb3/ocb3_done.o \
 src/encauth/ocb3/ocb3_encrypt.o src/encauth/ocb3/ocb3_encrypt_authenticate_memory.o \
diff --git a/sources.cmake b/sources.cmake
index 4953425d..72e7a1e4 100644
--- a/sources.cmake
+++ b/sources.cmake
@@ -62,17 +62,6 @@ src/encauth/gcm/gcm_mult_h.c
 src/encauth/gcm/gcm_process.c
 src/encauth/gcm/gcm_reset.c
 src/encauth/gcm/gcm_test.c
-src/encauth/ocb/ocb_decrypt.c
-src/encauth/ocb/ocb_decrypt_verify_memory.c
-src/encauth/ocb/ocb_done_decrypt.c
-src/encauth/ocb/ocb_done_encrypt.c
-src/encauth/ocb/ocb_encrypt.c
-src/encauth/ocb/ocb_encrypt_authenticate_memory.c
-src/encauth/ocb/ocb_init.c
-src/encauth/ocb/ocb_ntz.c
-src/encauth/ocb/ocb_shift_xor.c
-src/encauth/ocb/ocb_test.c
-src/encauth/ocb/s_ocb_done.c
 src/encauth/ocb3/ocb3_add_aad.c
 src/encauth/ocb3/ocb3_decrypt.c
 src/encauth/ocb3/ocb3_decrypt_last.c