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54 #include "gssapiP_eap.h"
57 gssEapChecksum(krb5_context context,
61 krb5_keyusage sign_usage,
62 gss_iov_buffer_desc *iov,
68 gss_iov_buffer_desc *header;
69 gss_iov_buffer_desc *trailer;
70 krb5_crypto_iov *kiov;
73 unsigned int k5_checksumlen;
78 code = krb5_c_crypto_length(context, KRB_KEY_TYPE(key),
79 KRB5_CRYPTO_TYPE_CHECKSUM, &k5_checksumlen);
83 header = gssEapLocateIov(iov, iov_count, GSS_IOV_BUFFER_TYPE_HEADER);
84 assert(header != NULL);
86 trailer = gssEapLocateIov(iov, iov_count, GSS_IOV_BUFFER_TYPE_TRAILER);
87 assert(rrc != 0 || trailer != NULL);
89 if (trailer == NULL) {
90 if (rrc != k5_checksumlen)
91 return KRB5_BAD_MSIZE;
92 if (header->buffer.length != 16 + k5_checksumlen)
93 return KRB5_BAD_MSIZE;
94 } else if (trailer->buffer.length != k5_checksumlen)
95 return KRB5_BAD_MSIZE;
97 kiov_count = 2 + iov_count;
98 kiov = (krb5_crypto_iov *)GSSEAP_MALLOC(kiov_count * sizeof(krb5_crypto_iov));
102 /* Checksum over ( Data | Header ) */
105 for (j = 0; j < iov_count; j++) {
106 kiov[i].flags = gssEapMapCryptoFlag(iov[j].type);
107 kiov[i].data.length = iov[j].buffer.length;
108 kiov[i].data.data = (char *)iov[j].buffer.value;
113 kiov[i].flags = KRB5_CRYPTO_TYPE_SIGN_ONLY;
114 kiov[i].data.length = 16;
115 kiov[i].data.data = (char *)header->buffer.value;
119 kiov[i].flags = KRB5_CRYPTO_TYPE_CHECKSUM;
120 if (trailer == NULL) {
121 kiov[i].data.length = header->buffer.length - 16;
122 kiov[i].data.data = (char *)header->buffer.value + 16;
124 kiov[i].data.length = trailer->buffer.length;
125 kiov[i].data.data = (char *)trailer->buffer.value;
130 krb5_boolean kvalid = FALSE;
132 code = krb5_c_verify_checksum_iov(context, type, key,
133 sign_usage, kiov, kiov_count, &kvalid);
137 code = krb5_c_make_checksum_iov(context, type, key,
138 sign_usage, kiov, kiov_count);
147 gssEapSign(krb5_context context,
151 krb5_keyusage sign_usage,
152 gss_iov_buffer_desc *iov,
155 return gssEapChecksum(context, type, rrc, key,
156 sign_usage, iov, iov_count, 0, NULL);
160 gssEapVerify(krb5_context context,
164 krb5_keyusage sign_usage,
165 gss_iov_buffer_desc *iov,
169 return gssEapChecksum(context, type, rrc, key,
170 sign_usage, iov, iov_count, 1, valid);
175 gssEapEncodeGssChannelBindings(OM_uint32 *minor,
176 gss_channel_bindings_t chanBindings,
177 gss_buffer_t encodedBindings)
179 OM_uint32 major, tmpMinor;
183 if (chanBindings != GSS_C_NO_CHANNEL_BINDINGS) {
185 length += chanBindings->initiator_address.length;
186 length += chanBindings->acceptor_address.length;
187 length += chanBindings->application_data.length;
189 encodedBindings->value = GSSEAP_MALLOC(length);
190 if (encodedBindings->value == NULL) {
192 return GSS_S_FAILURE;
195 encodedBindings->length = length;
196 p = (unsigned char *)encodedBindings->value;
198 store_uint32_be(chanBindings->initiator_addrtype, p);
199 store_buffer(&chanBindings->initiator_address, p + 4, 0);
200 p += 4 + chanBindings->initiator_address.length;
202 store_uint32_be(chanBindings->acceptor_addrtype, p);
203 store_buffer(&chanBindings->acceptor_address, p + 4, 0);
204 p += 4 + chanBindings->acceptor_address.length;
206 store_buffer(&chanBindings->application_data, p, 1);
207 p += chanBindings->application_data.length;
209 encodedBindings->length = 0;
210 encodedBindings->value = NULL;
214 return GSS_S_COMPLETE;