1 files changed, 96 insertions, 0 deletions
diff --git a/src/util/bits.h b/src/util/bits.h
new file mode 100644
index 0000000..3ea0dd2
--- /dev/null
+++ b/src/util/bits.h
@@ -0,0 +1,96 @@
+/*
+ * ecgen, tool for generating Elliptic curve domain parameters
+ * Copyright (C) 2017 J08nY
+ */
+
+#ifndef ECGEN_BITS_H
+#define ECGEN_BITS_H
+
+#include "misc/types.h"
+
+#define BYTE_LEN(bit_len) \
+	(((bit_len) % 8 == 0) ? (bit_len) / 8 : ((bit_len) / 8) + 1)
+
+#define GET_BIT(bit_array, bit_pos)                                 \
+	(((bit_array)[(bit_pos) / 8] & (1 << (7 - ((bit_pos) % 8)))) >> \
+	 (7 - ((bit_pos) % 8)))
+
+#define SET_BIT(bit_array, bit_pos, bit_value)          \
+	do {                                                \
+		unsigned char val = 1 << (7 - ((bit_pos) % 8)); \
+		if ((bit_value) == 1) {                         \
+			(bit_array)[(bit_pos) / 8] |= val;          \
+		} else {                                        \
+			(bit_array)[(bit_pos) / 8] &= ~val;         \
+		}                                               \
+	} while (0);
+
+bits_t *bits_new(size_t bit_len);
+
+bits_t *bits_copy(const bits_t *bits);
+
+void bits_free(bits_t **bits);
+
+bits_t *bits_from_i(GEN i);
+
+bits_t *bits_from_hex(const char *hex_str);
+
+bits_t *bits_from_bin(const char *bin_str);
+
+bits_t *bits_from_raw(const unsigned char *bits, size_t bit_len);
+
+bits_t *bits_from_bitvec(GEN v);
+
+GEN bits_to_i(const bits_t *bits);
+
+char *bits_to_hex(const bits_t *bits);
+
+char *bits_to_bin(const bits_t *bits);
+
+unsigned char *bits_to_raw(const bits_t *bits);
+
+size_t bits_to_rawlen(const bits_t *bits);
+
+GEN bits_to_bitvec(const bits_t *bits);
+
+void bits_concatz(bits_t *one, ...);
+
+bits_t *bits_concat(const bits_t *one, ...);
+
+bits_t *bits_or(const bits_t *one, const bits_t *other);
+
+bits_t *bits_and(const bits_t *one, const bits_t *other);
+
+void bits_notz(bits_t *bits);
+
+bits_t *bits_not(const bits_t *bits);
+
+void bits_rotz(bits_t *bits);
+
+bits_t *bits_rot(const bits_t *bits);
+
+void bits_shiftz(bits_t *bits, long amount);
+
+bits_t *bits_shift(const bits_t *bits, long amount);
+
+void bits_shiftrz(bits_t *bits, long amount);
+
+bits_t *bits_shiftr(const bits_t *bits, long amount);
+
+void bits_shiftiz(bits_t *bits, long amount);
+
+bits_t *bits_shifti(const bits_t *bits, long amount);
+
+void bits_lengthenz(bits_t *bits, long amount);
+
+bits_t *bits_lengthen(const bits_t *bits, long amount);
+
+void bits_shortenz(bits_t *bits, long amount);
+
+bits_t *bits_shorten(const bits_t *bits, long amount);
+
+void bits_sha1(const bits_t *bits, unsigned char hashout[20]);
+
+bool bits_eq(const bits_t *one, const bits_t *other);
+
+#endif  // ECGEN_BITS_H