38 wots_set_params(wots_params *params, int n, int w)  in wots_set_params()  argument
40   params->n = n;  in wots_set_params()
41   params->w = w;  in wots_set_params()
42   params->log_w = wots_log2(params->w);  in wots_set_params()
43   params->len_1 = (CHAR_BIT * n) / params->log_w;  in wots_set_params()
44   params->len_2 = (wots_log2(params->len_1 * (w - 1)) / params->log_w) + 1;  in wots_set_params()
45   params->len = params->len_1 + params->len_2;  in wots_set_params()
46   params->keysize = params->len * params->n;  in wots_set_params()
54 …c void expand_seed(unsigned char *outseeds, const unsigned char *inseed, const wots_params *params)  in expand_seed()  argument
58   for(i = 0; i < params->len; i++){  in expand_seed()
60     prf((outseeds + (i*params->n)), ctr, inseed, params->n);  in expand_seed()
71 …ned char *in, unsigned int start, unsigned int steps, const wots_params *params, const unsigned ch…  in gen_chain()  argument
74   for (j = 0; j < params->n; j++)  in gen_chain()
77   for (i = start; i < (start+steps) && i < params->w; i++) {  in gen_chain()
79     hash_f(out, out, pub_seed, addr, params->n);  in gen_chain()
88 … void base_w(int *output, const int out_len, const unsigned char *input, const wots_params *params)  in base_w()  argument
102     bits -= params->log_w;  in base_w()
103     output[out] = (total >> bits) & (params->w - 1);  in base_w()
108 void wots_pkgen(unsigned char *pk, const unsigned char *sk, const wots_params *params, const unsign…  in wots_pkgen()  argument
111   expand_seed(pk, sk, params);  in wots_pkgen()
112   for (i=0; i < params->len; i++) {  in wots_pkgen()
114     gen_chain(pk+i*params->n, pk+i*params->n, 0, params->w-1, params, pub_seed, addr);  in wots_pkgen()
119 …g, const unsigned char *msg, const unsigned char *sk, const wots_params *params, const unsigned ch…  in wots_sign()  argument
124   int *basew = calloc(params->len, sizeof(int));  in wots_sign()
128   base_w(basew, params->len_1, msg, params);  in wots_sign()
130   for (i=0; i < params->len_1; i++) {  in wots_sign()
131     csum += params->w - 1 - basew[i];  in wots_sign()
134   csum = csum << (8 - ((params->len_2 * params->log_w) % 8));  in wots_sign()
136   int len_2_bytes = ((params->len_2 * params->log_w) + 7) / 8;  in wots_sign()
141   int csum_basew[params->len_2];  in wots_sign()
142   base_w(csum_basew, params->len_2, csum_bytes, params);  in wots_sign()
144   for (i = 0; i < params->len_2; i++) {  in wots_sign()
145     basew[params->len_1 + i] = csum_basew[i];  in wots_sign()
148   expand_seed(sig, sk, params);  in wots_sign()
150   for (i = 0; i < params->len; i++) {  in wots_sign()
152     gen_chain(sig+i*params->n, sig+i*params->n, 0, basew[i], params, pub_seed, addr);  in wots_sign()
158 …, const unsigned char *sig, const unsigned char *msg, const wots_params *params, const unsigned ch…  in wots_pkFromSig()  argument
162   int *basew = calloc(params->len, sizeof(int));  in wots_pkFromSig()
166   base_w(basew, params->len_1, msg, params);  in wots_pkFromSig()
168   for (i=0; i < params->len_1; i++) {  in wots_pkFromSig()
169     csum += params->w - 1 - basew[i];  in wots_pkFromSig()
172   csum = csum << (8 - ((params->len_2 * params->log_w) % 8));  in wots_pkFromSig()
174   int len_2_bytes = ((params->len_2 * params->log_w) + 7) / 8;  in wots_pkFromSig()
179   int csum_basew[params->len_2];  in wots_pkFromSig()
180   base_w(csum_basew, params->len_2, csum_bytes, params);  in wots_pkFromSig()
182   for (i = 0; i < params->len_2; i++) {  in wots_pkFromSig()
183     basew[params->len_1 + i] = csum_basew[i];  in wots_pkFromSig()
185   for (i=0; i < params->len; i++) {  in wots_pkFromSig()
187 …gen_chain(pk+i*params->n, sig+i*params->n, basew[i], params->w-1-basew[i], params, pub_seed, addr);  in wots_pkFromSig()